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PIETRO FIORENTINI FT 518 Use & Maintenance

High-medium pressure gas regulator
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FT 518
High-medium pressure gas regulator
Revision A - Edition 06/2024
USE, MAINTENANCE AND
WARNING MANUAL
EN

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Summary of Contents for PIETRO FIORENTINI FT 518

  • Page 1 FT 518 High-medium pressure gas regulator Revision A - Edition 06/2024 USE, MAINTENANCE AND WARNING MANUAL...
  • Page 2 HIGH PRESSURE REGULATOR INTRODUCTION | REV Use, maintenance and warning manual...

  • Page 3: Introduction

    Training of the personnel responsible for the equipment both in its use, as well as in its maintenance and application of the safety directions and procedures given in this manual is of particular importance. Revision: A COPYRIGHT 2025 © PIETRO FIORENTINI S.P.A. HIGH PRESSURE REGULATOR INTRODUCTION REV. A...
  • Page 4 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR INTRODUCTION | REV Use, maintenance and warning manual...

  • Page 5: Revision History

    1.1 - REVISION HISTORY Revision index Date 06/2024 11/2024 Tab. 1.1 HIGH PRESSURE REGULATOR INTRODUCTION REV. A Use, maintenance and warning manual...

  • Page 6: Table Of Contents

    INDEX 1 - INTRODUCTION ........................3 1.1 - REVISION HISTORY ..........................5 2 - GENERAL INFORMATION ....................11 2.1 - MANUFACTURER IDENTIFICATION ......................11 2.2 - PRODUCT IDENTIFICATION ........................11 2.3 - REGULATORY FRAMEWORK ......................... 11 2.4 - WARRANTY ............................11 2.5 - SYMBOLS USED IN THE MANUAL ......................
  • Page 7 5.1.1 - PACKAGING AND FASTENING SYSTEMS USED FOR TRANSPORT ............44 5.2 - PHYSICAL CHARACTERISTICS OF THE EQUIPMENT ................46 5.2.1 - FT 518 ..............................46 5.2.2 - FT 518 + PM/518 ..........................48 5.2.3 - FT 518 + SB/518 ..........................50 5.3 - METHOD FOR ANCHORING AND LIFTING THE EQUIPMENT ..............52 5.3.1 - FORKLIFT HANDLING METHOD ......................53...
  • Page 8 6 - INSTALLATION ........................59 6.1 - INSTALLATION PRE-REQUISITES ......................59 6.1.1 - PERMISSIBLE ENVIRONMENTAL CONDITIONS ...................59 6.1.2 - CHECKS BEFORE INSTALLATION ......................60 6.2 - INSTALLATION-SPECIFIC SAFETY WARNINGS ..................61 6.3 - GENERAL INFORMATION ABOUT CONNECTIONS ................62 6.4 - INSTALLATION LOCATIONS OF THE REGULATOR ................63 6.5 - INSTALLATION PROCEDURES .......................
  • Page 9 9.4.1 - TIGHTENING TORQUES ........................100 9.4.2 - REPLACEMENT OF ELEMENTS SUBJECT TO WEAR AND ABRASION ..........103 9.4.3 - MAINTENANCE PROCEDURE OF REGULATOR FT 518 AND REGULATOR WITH MONITOR FUNCTION 104 9.4.4 - PM/518 BUILT-IN MONITOR MAINTENANCE PROCEDURE ...............118 9.4.5 - SB/518 BUILT-IN SLAM-SHUT VALVE MAINTENANCE PROCEDURE ..........130 10 - FAULT FINDING AND TROUBLESHOOTING ..............
  • Page 10 13 - CALIBRATION AND FLOW RATE TABLES ..............157 13.1 - FT 518 REGULATOR CALIBRATION TABLES ..................157 13.2 - SB/518 SLAM-SHUT VALVE CALIBRATION TABLES ................158 13.3 - FT 518 REGULATOR FLOW RATE TABLES ..................159 HIGH PRESSURE REGULATOR INTRODUCTION | REV...

  • Page 11: General Information

    PIETRO FIORENTINI S.P.A. guarantees that the equipment has been made with the best materials, with fine workmanship and complies with the quality requirements, specifications and performance envisaged in the order. The warranty will be considered null and void and PIETRO FIORENTINI S.P.A. will not be responsible for any damage and/or malfunctions: •...

  • Page 12: Symbols Used In The Manual

    2.5 - SYMBOLS USED IN THE MANUAL Symbol Definition Symbol used to identify important warnings for operator and/or equipment safety. Symbol used to identify particularly important information in the manual. The information may also concern the safety of personnel involved in using the equipment. Mandatory to consult the instruction manual/booklet.

  • Page 13: Recipients, Supply And Conservation Of The Manual

    Keep the manual near the equipment, in an accessible place known to all qualified technicians involved in its use and management. PIETRO FIORENTINI S.p.A. disclaims all liability for any damage to people, animals and things caused by fail- ure to observe the warnings and operating methods described in this manual.

  • Page 14: Identification Plates Applied

    It is absolutely forbidden to remove the identification plates and/or replace them with others. If, for accidental reasons, the plates are damaged or removed, the customer must inform PIETRO FIORENTINI S.p.A. The appliance and its accessories are equipped with identification plates.

  • Page 15: Identification Plates Glossary

    2.8.1 - IDENTIFICATION PLATES GLOSSARY Tab. 2.6 describes the terms and abbreviations used on the identification plates: Term Description Accuracy class. Pressure increase slam-shut valves accuracy class. AG max “OPSO” (Over pressure shut off). Pressure decrease safety devices accuracy class. AG min ”UPSO”(Under pressure shut off).
  • Page 16 Term Description Full range of set points for tripping caused by pressure increase of the pressure switch incorporat- Wdso ed in the slam-shut valve. This range can be achieved by adjustment but without component replacement. Full range of set points for tripping caused by pressure drop of the pressure switch incorporated in the slam-shut valve.

  • Page 17: Unit Of Measurement Glossary

    2.9 - UNIT OF MEASUREMENT GLOSSARY Measurement type Unit of measurement Description Sm³/h Standard cubic meters per hour Volumetric flow rate Scfh Standard cubic feet per hour Unit of measurement in the CGS system Pounds per square inch Pressure “wc inch of water column Pascal °C...

  • Page 18: Qualified Professionals

    2.10 - QUALIFIED PROFESSIONALS Qualified operators in charge of using and managing the equipment in all its phases of its service life: Professional Definition Qualified technician able to: • carry out preventive/corrective maintenance activities on all mechanical parts of the equip- Mechanical mainte- ment subject to maintenance or repair;...

  • Page 19: Safety

    3 - SAFETY 3.1 - GENERAL SAFETY WARNINGS The equipment described in this manual is: • a device subject to pressure in pressurized systems; • normally included in systems transporting flammable gases (for example: natural gas). If the gas used is a combustible gas, the area where the equipment is installed is called a "danger zone" be- cause there are residual risks of the formation of potentially explosive atmospheres.

  • Page 20: Personal Protective Equipment

    3.2 - PERSONAL PROTECTIVE EQUIPMENT In Tab. 3.9, Personal Protective Equipment (PPE) and its description are shown. An obligation is attached to each symbol. Personal protective equipment means any equipment intended to be worn by the worker for the purpose of protecting him/ her against one or more hazards likely to threaten his/her safety or health while at work.

  • Page 21: Residual Risks

    3.3 - RESIDUAL RISKS The risks associated with the equipment and the principles adopted for their prevention are evaluated below, according to the following classification: a) Elimination and/or reduction of risk. b) Application of appropriate protective measures. c) information to users about residual risks. HIGH PRESSURE REGULATOR SAFETY REV.

  • Page 22: Table Of Residual Risks Due To Pressure

    3.3.1 - TABLE OF RESIDUAL RISKS DUE TO PRESSURE Effect and Risk and Hazard Event and Cause Solution and Prevention Consequence a. Handling and installation by appropriate Pressurized gas means to avoid localized stresses. outlet. • Violent impact; • Deformation; b.
  • Page 23 Effect and Risk and Hazard Event and Cause Solution and Prevention Consequence Explosion of the pressurized • Reduction in me- • Operation at tem- a. The user must equip the plant with suit- fluid chanical strength peratures above the able control and safety equipment. outlet device.

  • Page 24: Residual Risks Table For Potentially Explosive Atmospheres

    3.3.2 - RESIDUAL RISKS TABLE FOR POTENTIALLY EXPLOSIVE ATMOSPHERES Tab. 3.11 shows the conditions that can lead to the generation of potentially explosive atmosphere respectively: • of the pressure regulator • of the monitor • of the slam-shut valve Considering that the silencer has no active functional parts, in this analysis it is considered as an integral part of the regulator. The table is valid for use with natural gas with a density not exceeding 0.8;...
  • Page 25 Potentially Operating explosive Management measures conditions atmosphere Normative References included in the operating and warning instructions This event should be considered as a Breakage rare malfunction. The instructions for use indicate the of the control head All atmospheric pressure chambers need to meet the requirements giv- diaphragm bounded on at least one side by a dia-...

  • Page 26: Obligations And Prohibitions

    3.4 - OBLIGATIONS AND PROHIBITIONS The list of obligations and prohibitions to be observed for operator safety is given below. It is mandatory to: • carefully read and understand the operating and warning instructions; • verify that the downstream equipment is properly sized according to the performance required of the regulator under the actual operating condition;...

  • Page 27: Safety Pictograms

    For the generated noise value of the equipment and further information, please contact PIETRO FIORENTINI S.p.A. The requirement to use ear muffs or earplugs to protect the operator's hearing remains if noise in the equip- ment installation environment (depending on specific operating conditions) exceeds 85 dBA.
  • Page 28 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR SAFETY | REV. A Use, maintenance and warning manual...

  • Page 29: Description And Operation

    4 - DESCRIPTION AND OPERATION 4.1 - GENERAL DESCRIPTION The FT 518 equipment is a direct-operated pressure regulator for medium and high pressure that reduces the pressure of the incoming gas. The value of the downstream pressure (Pd) varies according to: •...

  • Page 30: Regulator Reaction Modes

    4.1.1 - REGULATOR REACTION MODES The FT 518 equipment is a direct-operated regulator with a "fail open" reaction, i.e. it opens in case of: • rupture of the main diaphragm • lack of downstream pressure signal. 4.2 - OPERATION pstream pressUre ownstream pressUre Fig.
  • Page 31 Under normal operating conditions, the plug (3) is positioned to keep the pressure (Pd) around the chosen calibration value. FT 518 can also be equipped with an internal relief to vent gas to the outside when the pressure at the control point exceeds the set pressure.

  • Page 32: Intended Use

    “4.3.1 - Intended use”. Any other use of the equipment than that envisaged must be authorized in advance in writing by PIETRO FIORENTINI S.p.A. In the absence of written permission, the use is considered improper.

  • Page 33: Technical Characteristics/Performance

    TECHNICAL CHARACTERISTICS/PERFORMANCE The FT 518 equipment is a regulator for medium and high pressure. FT 518 is a "top entry" type regulator that allows easy maintenance and application of accessories in the field. The main specifications of this regulator are:...

  • Page 34: Possible Configurations

    4.5 - POSSIBLE CONFIGURATIONS The FT 518 equipment can have different configurations through the installation one of the following accessories: • Built-in monitor PM/518 • Built-in SB/518 slam-shut valve The installation of the accessories can be carried out directly in the factory or, at a later time, directly in the field.

  • Page 35: Regulator With In-Line Monitor Function

    For better adjustment, in the regulator with in-line monitor function, it is preferable to mount the valve seat with a diameter of 3/8" or larger. pstream pressUre ownstream pressUre Fig. 4.3. FT 518 with in-line monitor HIGH PRESSURE REGULATOR DESCRIPTION AND OPERATION REV. A...
  • Page 36 IN-LINE REGULATOR-MONITOR OPERATION IN STANDBY CONDITIONS The regulator with monitor function, during normal operation, is open due to its higher calibration of the main regulator cali- bration (2). pstream pressUre ownstream pressUre Fig. 4.4. In-line regulator-monitor operation in standby conditions HIGH PRESSURE REGULATOR DESCRIPTION AND OPERATION REV.
  • Page 37 IN-LINE MONITOR OPERATION UNDER MAIN REGULATOR FAULTY CONDITIONS pstream pressUre ownstream pressUre Fig. 4.5. In-line monitor operation under main regulator faulty conditions In case of failure of the main regulator (2), the regulator with in-line monitor function (1) will trip keeping the downstream pres- sure value (Pd) within the value established for the calibration of the latter.

  • Page 38: Incorporated Monitor

    4.5.2 - INCORPORATED MONITOR The FT 518 equipment may include the installation of the built-in monitor PM/518. The built-in monitor (1) has the task of keeping the value of the pressure downstream of the main regulator (2) within the pre- determined limits in case of failure of the latter.
  • Page 39 If, during operation, the following should occur: Operating conditions Operational consequences Final outcome Decrease in downstream pressure (Pd) due to: • Thrust on the diaphragm (5) is less than Increasing the downstream pressure • increase in the required flow the load of the spring (4) (Pd) until the preset calibration value rate;...

  • Page 40: Slam-Shut Valve

    4.5.3 - SLAM-SHUT VALVE The slam-shut valve is a safety device that has the task of intercepting the gas flow if the pressure value at the control point exceeds the calibration value of the valve itself. The slam-shut valve is incorporated to the main body of the equipment and consists of: •...
  • Page 41 Fig. 4.7. FT 518 with built-in SB/518 slam-shut valve HIGH PRESSURE REGULATOR DESCRIPTION AND OPERATION REV. A Use, maintenance and warning manual...
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  • Page 43: Transport And Handling

    5 - TRANSPORT AND HANDLING 5.1 - SPECIFIC WARNINGS FOR TRANSPORT AND HANDLING The transport and handling activities, in compliance with the regulations in force in the country of destination of the equipment, must be carried out by personnel: • qualified (specially trained);...

  • Page 44: Packaging And Fastening Systems Used For Transport

    • immediately report to PIETRO FIORENTINI S.p.A. any damage found. PIETRO FIORENTINI S.p.A. is not liable for damage to property or persons caused by accidents due to failure to comply with the instructions given in this manual. Tab. 5.22 shows the types of packaging used: Ref.
  • Page 45 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...

  • Page 46: Physical Characteristics Of The Equipment

    5.2 - PHYSICAL CHARACTERISTICS OF THE EQUIPMENT 5.2.1 - FT 518 Ø Fig. 5.8. Physical characteristics FT 518 HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...
  • Page 47 Clearances and dimensions FT 518 [inches] 7.7” 8.4” 1.4” 6.38” 3.46” 1.85” 5.65” 9.1” 7.5” 1.8” 6.73” DN 20, DN 25: 4 DN 50: 5.2 Ø 3.94” PULSE 1/4 NPT VENTING 3/4 NPT Tab. 5.23 Weights [lbs] 1” NPT 3/4 NPT 2”...

  • Page 48: Ft 518

    5.2.2 - FT 518 + PM/518 Fig. 5.9. Physical characteristics FT 518 + PM/518 HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...
  • Page 49 Clearances and dimensions FT 518 + PM/518 [inches] 7.7” 8.4” 1.4” 6.38” 6.38” 5.65” 5.65” 9.1” 11.3” 1.8” 6.73” DN 20, DN 25: 4 DN 50: 5.2 Ø 3.94” PULSE 1/4 NPT VENTING 3/4 NPT Tab. 5.25 Weights [lbs] 1” NPT 12.12...

  • Page 50: Ft 518 + Sb/518

    5.2.3 - FT 518 + SB/518 Ø Fig. 5.10. Physical characteristics FT 518 + SB/518 HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...
  • Page 51 Clearances and dimensions FT 518 + SB/518 [inches] 3.7” 4.0” 1.4” 6.38” 7.4” 6.6” 5.65” 9.1” 6.0” 12.3” 2.15” DN 20, DN 25: 4 DN 50: 5.2 5.2” Ø 3.94” PULSE 1/4 NPT VENTING 3/4 NPT Tab. 5.27 Weights [lbs] 1”...

  • Page 52: Method For Anchoring And Lifting The Equipment

    5.3 - METHOD FOR ANCHORING AND LIFTING THE EQUIPMENT Before moving a load, make sure that its weight does not exceed the load capacity of the lifting means (and any other equipment) indicated on the specific plate. The unloading, transport and handling activities must be carried out by operators qualified for such opera- tions and specially trained: •...

  • Page 53: Forklift Handling Method

    5.3.1 - FORKLIFT HANDLING METHOD It is forbidden to: • pass under suspended loads; • move the load over the personnel working in the site/plant area. On forklift trucks it is forbidden to: • transport passengers; • lift people. The packaging must always be handled in an upright position. Proceed as described in Tab.
  • Page 54 Sollevare lentamente il carico di qualche decina di centimetri e veri carne la stabilità facendo attenzio- Step Operation Image Inclinare il montante all’indietro (verso il posto guida) per avvantaggiare il momento ribaltante e Adeguare la veloc ne che il baricentro del carico sia posizionato al centro delle forche di sollevamento. garantire una maggiore stabilità...

  • Page 55: Crane Handling Method

    5.3.2 - CRANE HANDLING METHOD It is compulsory to use chains, cables and eyebolts marked CE or marked with marks/conformity markings in accordance with the provisions in force in the place of installation. Do not use chains connected to each other by bolts.

  • Page 56: Unpacking

    • do not perform the installation operations; • contact PIETRO FIORENTINI S.p.A. communicating the data shown on the identification plate of the equipment. 5.4.1 - PACKAGING DISPOSAL Separate the various materials making up the packaging and dispose of them in compliance with the regula- tions in force in the country of installation.

  • Page 57: Storage And Environmental Conditions

    To replace the rubber parts of the equipment, refer to chapter “Maintenance and functional testing”. PIETRO FIORENTINI S.p.A. recommends checking the state of conservation of the rubber parts for periods of inactivity or storage exceeding 3 years.
  • Page 58 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...

  • Page 59: Installation

    6 - INSTALLATION 6.1 - INSTALLATION PRE-REQUISITES 6.1.1 - PERMISSIBLE ENVIRONMENTAL CONDITIONS For the safe use of the equipment, respecting the permitted environmental conditions, follow the data on the plate of the regulator and any accessories (refer to paragraph z). The place of installation must be suitable for safe use of the equipment.

  • Page 60: Checks Before Installation

    1000 1000 Tab. 6.34 Allowable pressure (according to EN 334) Control head Reference FT 518 LP FT 518 HP Diaphragm Maximum differential Tab. 6.35 Where the installation of the equipment requires the application of compression fittings in the field, these must be installed according to the instructions of the manufacturer of the fittings.

  • Page 61: Installation-Specific Safety Warnings

    Before proceeding with the installation you must make sure that: • the intended dimensions of the installation site are compatible with the dimensions of the equipment; • there are no impediments to the maintenance operations of the employees; • upstream and downstream pipes are at the same level and capable of bearing the weight of the equipment; •...

  • Page 62: General Information About Connections

    2 pressure gauges placed one upstream and one downstream of the equipment. 1 pressure regulator. 1 downstream shut-off valve. Tab. 6.37 FT 518 can have external (Fig. 6.11) or internal (Fig. 6.12) sensing line. Fig. 6.11. In-line installation, external sensing line Fig. 6.12.

  • Page 63: Installation Locations Of The Regulator

    The vents of the equipment must be channeled according to standards in force at the place of installation of the equipment. 6.4 - INSTALLATION LOCATIONS OF THE REGULATOR Tab. 6.38 illustrates the typical regulator positions: Sensing lines Installation location External sensing line standard position External sensing line inverted position...

  • Page 64: Installation Procedures

    6.5 - INSTALLATION PROCEDURES 6.5.1 - EQUIPMENT INSTALLATION PROCEDURE Step Operation Connect the equipment to the pipeline in the section of the line designated for it. Make sure there are no external leaks. Tab. 6.39 For installation carried out after maintenance, replace the gaskets. 6.5.2 - CONNECTING THE SENSING LINES TO THE DOWNSTREAM PIPELINE Fig.
  • Page 65 To calculate the flow rate use the following formula: 14.504 − 0,002 = 0.0498 14.504 V = gas speed in ft/sec Q = Scfh gas flow rate DN = nominal pipe diameter in inches Pd = outlet pressure of the regulator in psi All pneumatic connections to be made in the field must have pipes with a minimum internal diameter of 8 mm.

  • Page 66: Post-Installation And Pre-Commissioning Verification

    In case there is a sensing line, connect the connections of the equipment as follows: • 1 and 2 sensing lines of the control head of the main regulator and the regulator with built-in monitor or monitor function; • 3 and 4 free sockets; •...

  • Page 67: Commissioning/Maintenance Equipment

    7 - COMMISSIONING/MAINTENANCE EQUIPMENT 7.1 - EQUIPMENT LIST Commissioning/maintenance equipment use • Mechanical maintenance technician; • Electrical maintenance technician; Operator qualification • Installer; • User technician. The PPE listed in this chart relates to the risk associated with the equipment. For PPE required the PPE required to protect against risks associated with the workplace, installa- tion or operating conditions, refer to:...
  • Page 68 Ref. Type of equipment Image Hexagonal socket "T" wrench Phillips screwdriver Slotted screwdriver O-ring extraction tool Ring pliers Fiorentini special key Fiorentini special key Fiorentini special tool Tab. 7.41 HIGH PRESSURE REGULATOR REV. A COMMISSIONING/MAINTENANCE EQUIPMENT Use, maintenance and warning manual...

  • Page 69: Equipment Needed For The Different Configurations

    17-19-24 6 - 1/4” 6 - 1/4” 6 - 1/4” 6 - 1/4” 6 - 1/4” 6 - 1/4” 8-11-15-22-24 8-11-15-22-24 8-11-15-22-24 Tab. 7.43 FT 518 + PM/518 Equipment Size [inches] Ref. Type 3/4” 1” 2” 17-19-24 17-19-24 17-19-24 6 - 1/4”...
  • Page 70 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR REV. A COMMISSIONING/MAINTENANCE EQUIPMENT Use, maintenance and warning manual...

  • Page 71: Commissioning

    8 - COMMISSIONING 8.1 - GENERAL WARNINGS 8.1.1 - SAFETY REQUIREMENTS FOR COMMISSIONING During commissioning, the risks posed by possible discharges of flammable or noxious gases into the atmo- sphere must be assessed. In the case of installation on distribution networks for natural gas, the risk of explosive mixture (gas/air) for- mation inside the pipes should be considered if an inerting procedure of the line is not adopted.

  • Page 72: Preliminary Procedures For Commissioning

    Before commissioning the equipment, it is necessary to verify that: • All shut-off valves (inlet, outlet, bypass if any) are closed; • the gas is at a temperature within the limits indicated on the nameplate. Commissioning • Installer; Operator qualification •...

  • Page 73: Verification Of Proper Commissioning

    8.3 - VERIFICATION OF PROPER COMMISSIONING Completely sprinkle the equipment with a foaming solution (or equivalent control system) in order to verify the tightness of the external surfaces of the regulator and connections made during installation. 8.4 - CALIBRATION OF ACCESSORIES PRESENT To perform proper calibration of the equipment and the accessories present, refer to the accuracy class shown on the identification plates (see section 2.8).

  • Page 74: Regulator Commissioning Procedure

    8.5 - REGULATOR COMMISSIONING PROCEDURE In the application consisting of several pressure control lines, it is recommended to commission one line at a time starting with the one with the lowest set-point. The set-point value is recalled on the test certificate attached to each piece of equipment. Fig.
  • Page 75 Step Operation Remove the cap (7) from the regulator (1). Partially open the drain cock (6). Very slowly open the upstream shut-off valve (V1). Check the pressure by referring to the pressure gauge (4) located upstream. Check the pressure of the line inlet pipe by referring to the upstream pressure gauge (4). To calibrate the regulator (1) to the required calibration value, turn the adjusting screw (3): •...

  • Page 76: Commissioning Procedure Of The Regulator And The Regulator With In-Line Monitor Function

    8.6 - COMMISSIONING PROCEDURE OF THE REGULATOR AND THE REGULATOR WITH IN-LINE MONITOR FUNCTION Fig. 8.18. Commissioning of in-line regulator and monitor with external sensing line Step Operation Remove the cap (7) from the main regulator (1). To calibrate the main regulator (1), turn the adjusting screw (3): •...
  • Page 77 Step Operation To calibrate the main regulator (1) to the required calibration value, turn the adjusting screw (3): • clockwise to increase the pressure value • counterclockwise to decrease the pressure value Check the pressure by referring to the pressure gauge (5) located downstream. Verify that the regulator with in-line monitor function (2) is fully open (100%).

  • Page 78: Commissioning Procedure Of The Regulator With Built-In Monitor

    8.7 - COMMISSIONING PROCEDURE OF THE REGULATOR WITH BUILT-IN MONITOR Fig. 8.19. Built-in regulator and monitor with external sensing line Fig. 8.20. Built-in regulator and monitor with internal sensing line | COMMISSIONING HIGH PRESSURE REGULATOR | REV. A Use, maintenance and warning manual...
  • Page 79 Step Operation Remove the cap (7) from the main regulator (1). To calibrate the main regulator (1), turn the adjusting screw (3): • clockwise to increase the pressure value • counterclockwise to decrease the pressure value Check that the calibration value of the main regulator (1) is higher than the calibration value of the in-line monitor PM/518 (2), referring to the pressure gauge (5) located downstream.
  • Page 80 Fig. 8.19 Built-in regulator and monitor with external sensing line Fig. 8.20 Built-in regulator and monitor with internal sensing line | COMMISSIONING HIGH PRESSURE REGULATOR | REV. A Use, maintenance and warning manual...
  • Page 81 Step Operation Check with a foaming substance the tightness of all joints located between the shut-off valves (V1, V2). Insert the cap (7) into the main regulator (1). Slowly open downstream shut-off valve (V2) until the pipeline is completely flooded. •...

  • Page 82: Pressurization With External Source

    8.8 - PRESSURIZATION WITH EXTERNAL SOURCE For lines where the slam-shut valve (2) is installed, it is possible to pressurize the chamber (A) of the main regulator head (1) using an external source. Pressurization can occur: • with external lines; •...
  • Page 83 Fig. 8.23. Pressurization with external source HIGH PRESSURE REGULATOR COMMISSIONING REV. A Use, maintenance and warning manual...

  • Page 84: Commissioning Procedure Of The Regulator And Built-In Slam-Shut Valve

    8.9 - COMMISSIONING PROCEDURE OF THE REGULATOR AND BUILT-IN SLAM-SHUT VALVE 8.9.1 - LEAK TEST OF THE BUILT-IN SLAM-SHUT VALVE Fig. 8.24. Built-in regulator and slam-shut valve with external sensing line Fig. 8.25. Built-in regulator and slam-shut valve with internal sensing line | COMMISSIONING HIGH PRESSURE REGULATOR | REV.
  • Page 85 Step Operation Check that the slam-shut valve is in the closed position. Open the drain cock (6) to completely drain the downstream section. Slowly open the upstream shut-off valve (V1). Check the internal seal of the slam-shut valve through the drain valve (6). •...

  • Page 86: Commissioning Of The Regulator And Built-In Slam-Shut Valve

    8.9.2 - COMMISSIONING OF THE REGULATOR AND BUILT-IN SLAM-SHUT VALVE Fig. 8.26. Built-in regulator and slam-shut valve with external sensing line Fig. 8.27. Built-in regulator and slam-shut valve with internal sensing line | COMMISSIONING HIGH PRESSURE REGULATOR | REV. A Use, maintenance and warning manual...
  • Page 87 Step Operation Remove the cap (7) from the regulator (1). Check that the drain cock (6) is partially open. Check that the slam-shut valve (8) is in the closed position. Partially open the upstream shut-off valve (V1), checking the pressure value indicated by the upstream pressure gauge (4).

  • Page 88: Pressure Switch Calibration Procedure For The Built-In Slam-Shut Valve

    8.9.3 - PRESSURE SWITCH CALIBRATION PROCEDURE FOR THE BUILT-IN SLAM-SHUT VALVE Fig. 8.28. Regulator, in-line monitor and built-in slam-shut valve CALIBRATION OF SPRING TO TRIP FOR MAXIMUM PRESSURE Step Operation Increase the downstream pressure to the slam-shut valve's tripping value by connecting an external pressure source to the drain valve (Fig.
  • Page 89 CALIBRATION OF SPRING FOR TRIPPING BY MINIMUM PRESSURE (IF ANY) Step Operation Partially open the drain cock (Fig. 8.24, ref. 6) in the atmosphere and keep it open for the next steps. Turn the adjustment ring nut counterclockwise Fig. 8.24, ref. 3) of the regulator to decrease the downstream pres- sure (Pd) to the minimum pressure required for the slam-shut valve to trip.

  • Page 90: Commissioning Of The Regulator, Regulator With In-Line Monitor Function And Slam-Shut Valve

    8.10 - COMMISSIONING OF THE REGULATOR, REGULATOR WITH IN-LINE MONITOR FUNCTION AND SLAM-SHUT VALVE Fig. 8.29. Regulator, in-line monitor and built-in slam-shut valve Step Operation Remove the cap (10) from the regulator in inline monitor function (2). Remove the cap (7) from the main regulator (1). Check that the built-in slam-shut valve (11) is in the closed position.
  • Page 91 Step Operation Close the drain cock (6). Check the closing pressure, according to the following values: • HP header: up to SG 20 • LP header: up to SG 30 Partially open the drain cock (6). Verify that the regulator with in-line monitor function (2) is fully open (100%). The main regulator (1) is fully open, when the pressure indicated on the intermediate pressure gauge (4) is the same as the upstream pressure gauge (8).

  • Page 92: Calibration Of Devices

    8.11 - CALIBRATION OF DEVICES 8.11.1 - PRESSURE SWITCH MOD. 100 Fig. 8.30. Pressure switches mod. 100 Act on the maximum ring nut (13): • counterclockwise to decrease the slam-shut trip pressure; • clockwise to increase the slam-shut trip pressure. Act on the minimum ring nut (15): •...

  • Page 93: Maintenance And Functional Testing

    Repair or maintenance work not provided for in this manual may be carried out only with prior approval from PIETRO FIORENTINI S.p.A.. No liability related to damage to persons or property can be attributed to PIETRO FIORENTINI S.p.A. for interventions other than those described or performed in a manner other than those indicated.
  • Page 94 Before beginning equipment disassembly operations, it should be ensured that: • spare parts and parts used in replacements have appropriate requirements in order to ensure the original performance of the equipment. Use genuine recommended spare parts; • the operator has the necessary equipment (refer to chapter “7 - Commissioning/maintenance equipment”). Recommended replacement parts are unambiguously identified with tags indicating: •...

  • Page 95: Periodic Checks And Verifications Of Proper Operation

    9.2 - PERIODIC CHECKS AND VERIFICATIONS OF PROPER OPERATION Periodic checks and inspections Operator qualification Mechanical maintenance technician The PPE listed in this chart relates to the risk associated with the equipment. For PPE required the PPE required to protect against risks associated with the workplace, installa- tion or operating conditions, refer to: •...

  • Page 96: Routine Maintenance

    9.3 - ROUTINE MAINTENANCE 9.3.1 - GENERAL SAFETY WARNINGS • Put the equipment in a safe condition (close the downstream and then upstream shut-off valve, drain the line completely); • Make sure the pressure upstream and downstream of the equipment is "0". After releasing pressure from the line, trip the slam-shut valve.

  • Page 97: Frequency Of Replacement Of Components Subject To Wear And Tear

    9.3.2 - FREQUENCY OF REPLACEMENT OF COMPONENTS SUBJECT TO WEAR AND TEAR The following directions apply only to the components of the equipment. The non-metallic parts of the individual equipment concerned are divided into the following categories: Preventive maintenance operations Consider the parts subject to wear and/or abrasion where by: •...
  • Page 98 Minimum Category Part description Evaluation criterion replacement frequency Pressure regulators and related accessories 6 years Nonmetallic parts with sealing and perfor- Gas flow block type safety devices 6 years mance functions (diaphragms) of a piece of equipment Relief device with discharge to atmosphere 6 years Relief valves 6 years...

  • Page 99: Routine Maintenance Procedures

    9.4 - ROUTINE MAINTENANCE PROCEDURES Routine maintenance Operator qualification Mechanical maintenance technician The PPE listed in this chart relates to the risk associated with the equipment. For PPE required the PPE required to protect against risks associated with the workplace, installa- tion or operating conditions, refer to: •...

  • Page 100: Tightening Torques

    9.4.1 - TIGHTENING TORQUES 9.4.1.1 - FT 518 REGULATOR TIGHTENING TORQUES FT518 LP FT518 HP Fig. 9.31. FT 518 regulator tightening torques FT 518 LP, HP VERSION Pos. Description Torque (ft-lb) Valve Seat M8X20 screw M5X8 screw M8X20 screw Tab. 9.62 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV.
  • Page 101 9.4.1.2 - TIGHTENING TORQUES OF BUILT-IN MONITOR PM/518 Fig. 9.32. Tightening torques of built-in monitor PM/518 PM/518 VERSION LP, HP Pos. Description Torque (ft-lb) Valve Seat PM/518 Monitor plug M8X20 screw M5X8 screw M8X20 screw Tab. 9.63 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
  • Page 102 9.4.1.3 - SB/518 BUILT-IN SLAM-SHUT VALVE TIGHTENING TORQUES Fig. 9.33. SB/518 built-in slam-shut valve tightening torques SB/518 Pos. Description Torque (ft-lb) Valve Seat Rod guide Plug support Lock nut M5X16 screw M8X25 screw M8X20 screw M5X16 screw M4 nut M8X70 screw Tab.

  • Page 103: Replacement Of Elements Subject To Wear And Abrasion

    9.4.2 - REPLACEMENT OF ELEMENTS SUBJECT TO WEAR AND ABRASION 9.4.2.1 - INITIAL OPERATIONS After releasing pressure from the line, trip the slam-shut valve. Before carrying out any work, it is important to make sure that the line on which the regulator is installed has been shut-off upstream and downstream that it has been discharged.

  • Page 104: Maintenance Procedure Of Regulator Ft 518 And Regulator With Monitor Function

    9.4.3 - MAINTENANCE PROCEDURE OF REGULATOR FT 518 AND REGULATOR WITH MONITOR FUNCTION 9.4.3.1 - FT 518 REGULATOR LP VERSION VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA Fig. 9.35. FT 518 regulator LP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A...
  • Page 105 Step Operation Unscrew and remove cap (35). Unscrew adjustment screw (14). Remove the Seeger ring (12). Unscrew and remove the screws (20). Remove the cover (9). Remove the adjusting screw assembly (14, 31, 36, 15, 38). Remove and replace the O-ring (31), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Assemble the adjusting screw unit (14, 31, 36, 15, 38).
  • Page 106 VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA FT 518 regulator LP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 107 Step Operation Position the replacement diaphragm (17). The diaphragm lanyard must be inside the diaphragm seat (17). Position the diaphragm protection disc (10). The disc beam is positioned toward the diaphragm (17). Insert and fasten the nut (27), according to the tightening torque: •...
  • Page 108 VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA FT 518 regulator LP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 109 Step Operation Push the plug (3) inward. Check the lowering of the rod (8). Remove the valve seat (2) from the body (1). Remove and replace the O-ring (45) from the valve seat (2), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Place the valve seat (2) into the body (1), according to the tightening torque: •...
  • Page 110 9.4.3.2 - FT 518 REGULATOR HP VERSION VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA Fig. 9.36. FT 518 regulator HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 111 Step Operation Unscrew and remove cap (35). Unscrew adjustment screw (14). Remove the Seeger ring (12). Unscrew and remove the screws (20). Remove the cover (9). Remove the adjusting screw assembly (14, 31, 36, 15, 38). Remove and replace the O-ring (31), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Assemble the adjusting screw unit (14, 31, 36, 15, 38).
  • Page 112 VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA FT 518 regulator HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 113 Step Operation Position the diaphragm holder (18). Position the replacement diaphragm (17). The diaphragm lanyard must be inside the diaphragm seat (17). Position the diaphragm protection disc (10). The disc beam is positioned toward the diaphragm (17). Insert and fasten the nut (27), according to the tightening torque: •...
  • Page 114 VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA FT 518 regulator HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 115 Step Operation Place the lower reduction disc (42) in the intermediate body (5). Remove and replace the O-ring (47) from the intermediate body (5), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Place the rod guide assembly (6, 13, 39, 4, 22, 3) inside the intermediate body (5).
  • Page 116 VERSIONE PRESA DI IMPULSO ESTERNA/MONITOR IN LINEA FT 518 regulator HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 117 Step Operation Put the cap (35) in place. Unscrew and remove the screws (46) from the blind flange (50). Remove the blind flange (50). Remove and replace the O-rings (29, 34) from the blind flange (50), lubricating them with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Place the blind flange (50) into the body (1).

  • Page 118: Pm/518 Built-In Monitor Maintenance Procedure

    9.4.4 - PM/518 BUILT-IN MONITOR MAINTENANCE PROCEDURE 9.4.4.1 - BUILT-IN MONITOR PM/518 LP VERSION Fig. 9.37. Built-in monitor PM/518 LP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 119 Step Operation Unscrew and remove the cap (35). Unscrew the adjusting screw (14). Remove the Seeger ring (12). Unscrew and remove the screws (20). Remove the cover (9). Remove the adjusting screw assembly (14, 31, 36, 15, 38). Remove and replace the O-ring (31), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Assemble the adjusting screw unit (14, 31, 36, 15, 38).
  • Page 120 Built-in monitor PM/518 LP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 121 Step Operation Position the replacement diaphragm (17). The diaphragm lanyard must be inside the diaphragm seat (17). Position the diaphragm protection disc (10). The disc beam is positioned toward the diaphragm (17). Insert and fasten the nut (27), according to the tightening torque: •...
  • Page 122 Built-in monitor PM/518 LP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 123 Step Operation Insert and fasten the screws (46), according to the tightening torque: • Tab. 9.63 Tighten the screws according to the cross pattern in paragraph 9.4.2.2. Place the spring (32). Place the cover (9). Insert and fasten the screws (20) into the cover (9), according to the tightening torque: •...
  • Page 124 9.4.4.2 - BUILT-IN MONITOR PM/518 HP VERSION Fig. 9.38. Built-in monitor PM/518 HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 125 Step Operation Unscrew and remove cap (35). Unscrew adjustment screw (14). Remove the Seeger ring (12). Unscrew and remove the screws (20). Remove the cover (9). Remove the adjusting screw assembly (14, 31, 36, 15, 38). Remove and replace the O-ring (31), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Assemble the adjusting screw unit (14, 31, 36, 15, 38).
  • Page 126 Built-in monitor PM/518 HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 127 Step Operation Position the replacement diaphragm (17). The diaphragm lanyard must be inside the diaphragm seat (17). Position the diaphragm protection disc (10). The disc beam is positioned toward the diaphragm (17). Insert and fasten the nut (27), according to the tightening torque: •...
  • Page 128 Built-in monitor PM/518 HP version HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 129 Step Operation Insert drive shaft assembly (8, 24, 30, 18, 17, 10, 27, 16, 28, 33, 11). Take care that the lever (7) is placed between the pin (24) and the rod (8). Push the plug (3) inward. Check the lowering of the rod (8). Remove the valve seat (2) from the body (1).

  • Page 130: Sb/518 Built-In Slam-Shut Valve Maintenance Procedure

    9.4.5 - SB/518 BUILT-IN SLAM-SHUT VALVE MAINTENANCE PROCEDURE 9.4.5.1 - BUILT-IN SB/518 SLAM-SHUT VALVE Fig. 9.39. Built-in SB/518 slam-shut valve HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 131 Step Operation Check that the slam-shut valve is in the closed position. Remove the tube (76) from the sensing line. Unscrew and remove the screws (146). Slide the pressure switch off the intermediate flange (9) and place it on a deck with an anti-shock surface. Unscrew and remove the screws (46).
  • Page 132 Built-in SB/518 slam-shut valve HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 133 Step Operation VALID FOR PRESSURE SWITCH 103 Remove the diaphragm protection disc (15) from the rod (24). Unscrew and remove the screws (47). Remove the flange (3) from the slam-shut valve body (1). Remove the lip ring (58). Remove and replace the O-ring (67) from the flange (3), lubricating it with synthetic grease. Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution Unscrew and remove the nut (50) of the gasket (7) together with the washer (51).
  • Page 134 Built-in SB/518 slam-shut valve HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 135 Step Operation Place the balancing rod guide (8), O-rings (59, 63, 64, 65) and protection discs (12, 13). Unscrew and remove the plug holder (18). Remove the plug guide (20). Slide off the valve guide (17) together with the O-rings (61, 62) from the slam-shut valve body (1). Remove and replace the O-rings (61, 62) from the valve guide (17), lubricating them with synthetic grease.
  • Page 136 Built-in SB/518 slam-shut valve HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...
  • Page 137 Step Operation Position the replacement lip ring (58). The concave part faces the intermediate flange (9). Place the flange (3) into the body of the slam-shut valve (1). Insert and fasten the screws (47), according to the tightening torque: • Tab.
  • Page 138 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS | REV. A Use, maintenance and warning manual...

  • Page 139: Fault Finding And Troubleshooting

    • qualified and authorized for the activities inherent to the equipment. No liability related to personal injury or property damage can be attributed to PIETRO FIORENTINI S.p.A. for interventions: • other than those described;...

  • Page 140: Specific Qualification Of The Operator

    10.2 - SPECIFIC QUALIFICATION OF THE OPERATOR Commissioning • Mechanical maintenance technician; • Electrical maintenance technician; Operator qualification • Installer; • User technician. The PPE listed in this chart relates to the risk associated with the equipment. For PPE required the PPE required to protect against risks associated with the workplace, installa- tion or operating conditions, refer to: •...

  • Page 141: Troubleshooting Tables

    10.4 - TROUBLESHOOTING TABLES Refer to chapter “9 - Maintenance and functional testing” for pictures of the regulator FT 518 and its acces- sories. 10.4.1 - FT 518 REGULATOR TROUBLESHOOTING Fault Equipment Possible causes Intervention Diaphragm (17) worn out Replace...
  • Page 142 Replace Check coupling with lever (7), Diaphragm holder group (10, 17, clean and reassemble if neces- 18, 27) blocked FT 518 LP sary Check attachment with lever Rod guide assembly (3, 4, 6, 13, (7), clean and reposition if 22, 29, 34, 39) blocked...
  • Page 143 Clean and if necessary replace of the O-ring (30) Sealing failure Clean and if necessary replace of the O-ring (34) FT 518 LP Diaphragm (17) damaged Replace Fasten the screws according Screws (20) not tightened ac- to the tightening torque in Tab.

  • Page 144: Troubleshooting Ft 518 With In-Line Monitor Function

    10.4.2 - TROUBLESHOOTING FT 518 WITH IN-LINE MONITOR FUNCTION Fault Equipment Possible causes Intervention Diaphragm (17) worn out Replace Spring (32) snared or out of Reposition and replace if re- plane quired AC out of class due to spring Replace...
  • Page 145 Replace Check coupling with lever (7), Diaphragm holder group (10, 17, clean and reassemble if neces- 18, 27) blocked FT 518 LP/M sary Check attachment with lever Rod guide assembly (3, 4, 6, 13, (7), clean and reposition if 22, 29, 34, 39) blocked...
  • Page 146 Clean and if necessary replace of the O-ring (30) Sealing failure Clean and if necessary replace of the O-ring (34) FT 518 LP Diaphragm (17) damaged Replace Fasten the screws according Screws (20) not tightened ac- to the tightening torque in Tab.

  • Page 147: Troubleshooting Built-In Monitor Pm/518

    Clean and if necessary replace worn plug (45) Incorrect rod (6) and lever (7) Verify assembly attachment FT 518 + PM/518 LP Incorrect coupling of drive shaft Verify assembly (8) and lever (7) Rod (6) ruined Check and if necessary replace...
  • Page 148 Check coupling with lever (7), Diaphragm holder group (10, 17, clean and reassemble if neces- 18, 27) blocked FT 518 + PM/518 LP sary Check attachment with lever Rod guide assembly (3, 4, 6, 13, (7), clean and reposition if...
  • Page 149 Clean and if necessary replace of the O-ring (30) Sealing failure Clean and if necessary replace of the O-ring (34) FT 518 + PM/518 LP Diaphragm (17) damaged Replace Fasten the screws according Screws (20) not tightened ac- to the tightening torque in Tab.

  • Page 150: Troubleshooting Built-In Sb/518 Slam-Shut Valve

    10.4.4 - TROUBLESHOOTING BUILT-IN SB/518 SLAM-SHUT VALVE If the built-in slam-shut valve has tripped, close the inlet and outlet valves (V1 and V2) of the line and relieve the pressure before any operation. Fault Equipment Possible causes Intervention Diaphragm (4) worn out Replace Calibration springs snared or Reposition and replace if...

  • Page 151: Uninstallation And Disposal

    11 - UNINSTALLATION AND DISPOSAL 11.1 - GENERAL SAFETY WARNINGS Ensure that there are no effective ignition sources in the work area set up for equipment de-installation and/or disposal. Before proceeding with uninstallation and disposal operations, ensure that the equipment is secured by dis- connecting it from all power supplies.

  • Page 152: Uninstalling

    11.3 - UNINSTALLING Before uninstalling the equipment, completely drain the fluid in the reduction line and inside the equipment. Refer to the installation procedures for uninstalling the equipment (see chapter “6 - Installation”) by proceed- ing in reverse order. 11.4 - INFORMATION NEEDED IN CASE OF RE-INSTALLATION In case the equipment after uninstallation is to be reused, refer to chapter: •...

  • Page 153: Disposal Information

    11.5 - DISPOSAL INFORMATION Please remember to comply with the laws in force in the country where the equipment is installed. Illegal or improper disposal will result in the application of the penalties provided for in the regulations in force in the country of installation.
  • Page 154 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR UNINSTALLATION AND DISPOSAL | REV. A Use, maintenance and warning manual...

  • Page 155: Recommended Spare Parts

    By using spare parts without PIETRO FIORENTINI S.p.A. trademark, the stated performance cannot be guar- anteed. It is recommended to use the original PIETRO FIORENTINI S.p.A. spare parts PIETRO FIORENTINI S.p.A. is not responsible for damage caused by the use of non-original spare parts or components. 12.2 - HOW TO REQUEST SPARE PARTS For specific information, consult the PIETRO FIORENTINI S.p.A.
  • Page 156 PAGE INTENTIONALLY LEFT BLANK HIGH PRESSURE REGULATOR RECOMMENDED SPARE PARTS | REV. A Use, maintenance and warning manual...

  • Page 157: Calibration And Flow Rate Tables

    13 - CALIBRATION AND FLOW RATE TABLES 13.1 - FT 518 REGULATOR CALIBRATION TABLES FT 518 LP Pos. Spring article code Spring color Min. 2701270 Grey 5.0036 9.9927 2701541 White 10.0073 2701800 Yellow 20.0145 31.9942 2702080 Orange 32.0087 49.9927 2702290 50.0073...

  • Page 158: Sb/518 Slam-Shut Valve Calibration Tables

    13.2 - SB/518 SLAM-SHUT VALVE CALIBRATION TABLES Calibration tables of possible pressure switches in built-in slam-shut valves are provided below: SB/518 Mod. 103 - Max pressure Pos. Spring article code Spring color Min. 2701040 White/Orange 14.5033 17.4039 2701260 White 17.4184 29.005 2701530 Yellow...

  • Page 159: Ft 518 Regulator Flow Rate Tables

    8900 8900 8900 8500 Cg = 9 | K1 = 120 Tab. 13.85 FT 518 3/32 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 160 14500 15600 13500 14900 Cg = 16 | K1 = 120 Tab. 13.87 FT 518 1/18 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 161 17700 19500 29700 32900 Cg = 34 | K1 = 120 Tab. 13.89 FT 518 3/16 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 162 19500 30100 30400 49500 Cg = 58 | K1 = 120 Tab. 13.91 FT 518 1/4 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 163 49500 1000 38900 53000 Cg = 115 | K1 = 120 Tab. 13.93 FT 518 3/8 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 164 46000 67100 1000 70700 Cg = 180 | K1 = 120 Tab. 13.95 FT 518 1/2 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 165 7600 8200 8900 8900 Cg = 9 | K1 = 120 Tab. 13.97 FT 518 3/32 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 166 14500 15200 16100 16100 Cg = 16 | K1 = 120 Tab. 13.99 FT 518 1/8 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 167 35400 33900 35400 34300 Cg = 34 | K1 = 120 Tab. 13.101 FT 518 3/16 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 168 54800 62900 63600 62900 Cg = 58 | K1 = 120 Tab. 13.103 FT 518 1/4 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 169 60100 70700 88300 123600 Cg = 115 | K1 = 120 Tab. 13.105 FT 518 3/8 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 170 127200 1000 98868 134200 Cg = 180 | K1 = 120 Tab. 13.107 FT 518 1/2 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 171 6100 6100 1000 8300 8200 Cg = 9 | K1 = 120 Tab. 13.109 FT 518 3/32 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 172 11300 10300 1000 13100 13800 Cg = 16 | K1 = 120 Tab. 13.111 FT 518 1/8 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 173 23000 24100 1000 26600 30400 Cg = 34 | K1 = 120 Tab. 13.113 FT 518 3/16 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 174 25300 33600 1000 28300 35400 Cg = 58 | K1 = 120 Tab. 13.115 FT 518 1/4 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 175 34300 35400 1000 35400 38900 Cg = 115 | K1 = 120 Tab. 13.117 FT 518 3/8 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 176 35400 40700 38900 1000 42400 Cg = 180 | K1 = 120 Tab. 13.119 FT 518 1/2 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 177 7500 7600 8200 8900 8900 Cg = 9 | K1 = 120 Tab. 13.121 FT 518 3/32 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 178 12200 14500 15200 16100 16100 Cg = 16 | K1 = 120 Tab. 13.123 FT 518 1/8 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 179 21900 35400 33900 35400 34300 Cg = 34 | K1 = 120 Tab. 13.125 FT 518 3/16 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 180 37100 54800 62900 56500 54800 Cg = 58 | K1 = 120 Tab. 13.127 FT 518 1/4 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 181 49500 60100 63600 88300 106000 Cg = 115 | K1 = 120 Tab. 13.129 FT 518 3/8 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 182 88275 79500 1000 98868 113000 Cg = 180 | K1 = 120 Tab. 13.131 FT 518 1/2 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 183 8900 8900 8900 8500 Cg = 9 | K1 = 120 Tab. 13.133 FT 518 3/32 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 184 15200 15600 13500 14900 Cg = 16 | K1 = 120 Tab. 13.135 FT 518 1/8 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 185 26500 28300 33600 33600 Cg = 34 | K1 = 120 Tab. 13.137 FT 518 3/16 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 186 31800 31800 49500 601000 Cg = 58 | K1 = 120 Tab. 13.139 FT 518 1/4 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 187 95400 1000 63600 120100 Cg = 115 | K1 = 120 Tab. 13.141 FT 518 3/8 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 188 67100 137800 1000 141300 Cg = 160 | K1 = 120 Tab. 13.143 FT 518 1/2 STD - LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 189 9100 8900 8700 8700 Cg = 9 | K1 = 120 Tab. 13.145 FT 518 3/32 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 190 15900 15900 16100 15200 Cg = 16 | K1 = 120 Tab. 13.147 FT 518 1/8 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 191 34300 35700 34700 34700 Cg = 34 | K1 = 120 Tab. 13.149 FT 518 3/16 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 192 58300 64300 62200 63600 Cg = 58 | K1 = 120 Tab. 13.151 FT 518 1/4 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 193 63600 70700 127200 128900 Cg = 115 | K1 = 120 Tab. 13.153 FT 518 3/8 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 194 141300 1000 98868 162500 Cg = 180 | K1 = 120 Tab. 13.155 FT 518 1/2 STD - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 195 6100 6100 1000 8300 8200 Cg = 9 | K1 = 120 Tab. 13.157 FT 518 3/32 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 196 11300 10300 1000 13100 13800 Cg = 16 | K1 = 120 Tab. 13.159 FT 518 1/8 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 197 23000 24100 1000 30100 31100 Cg = 34 | K1 = 120 Tab. 13.161 FT 518 3/16 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 198 35400 407000 1000 46000 53000 Cg = 58 | K1 = 120 Tab. 13.163 FT 518 1/4 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 199 60100 88300 1000 63600 116600 Cg = 115 | K1 = 120 Tab. 13.165 FT 518 3/8 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 200 81300 60100 88300 1000 91900 Cg = 160 | K1 = 120 Tab. 13.167 FT 518 1/2 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 201 8500 9100 8900 8700 8700 Cg = 9 | K1 = 120 Tab. 13.169 FT 518 3/32 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 202 15900 15900 15900 16100 15200 Cg = 16 | K1 = 120 Tab. 13.171 FT 518 1/8 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 203 33100 34300 35700 34700 34700 Cg = 34 | K1 = 120 Tab. 13.173 FT 518 3/16 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 204 60100 55100 63600 62200 62900 Cg = 58 | K1 = 120 Tab. 13.175 FT 518 1/4 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 205 82700 102400 111600 111300 118000 Cg = 115 | K1 = 120 Tab. 13.177 FT 518 3/8 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 206 88275 81300 1000 98868 123600 Cg = 58 | K1 = 120 Tab. 13.179 FT 518 1/2 PM/518 HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 207 9600 9900 9600 9900 9600 Cg = 9 | K1 = 120 Tab. 13.181 FT 518 3/32 STD LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 208 16300 16300 16300 15900 15600 Cg = 16 | K1 = 120 Tab. 13.183 FT 518 1/8 STD LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 209 1000 33600 31800 35400 35400 Cg = 34 | K1 = 120 Tab. 13.185 FT 518 3/16 STD LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 210 42400 47700 1000 60100 61800 Cg = 58 | K1 = 120 Tab. 13.187 FT 518 1/4 STD LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 211 70700 107700 1000 88300 141300 Cg = 115 | K1 = 120 Tab. 13.189 FT 518 3/8 STD LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 212 123600 120100 148400 1000 180100 Cg = 180 | K1 = 120 Tab. 13.191 FT 518 1/2 STD LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 213 7500 9100 8900 8700 8700 Cg = 9 | K1 = 120 Tab. 13.193 FT 518 3/32 STD HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 214 15900 15900 15900 16100 15200 Cg = 16 | K1 = 120 Tab. 13.195 FT 518 1/8 STD HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 215 33100 34300 35700 34700 34700 Cg = 34 | K1 = 120 Tab. 13.197 FT 518 3/16 STD HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 216 60100 58300 64300 62200 63600 Cg = 58 | K1 = 120 Tab. 13.199 FT 518 1/4 STD HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 217 113000 106000 113000 127200 128900 Cg = 115 | K1 = 120 Tab. 13.201 FT 518 3/8 STD HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 218 88275 141300 1000 98868 162500 Cg = 180 | K1 = 120 Tab. 13.203 FT 518 1/2 STD HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 219 6400 6100 1000 8900 8900 Cg = 9 | K1 = 120 Tab. 13.205 FT 518 3/32 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 220 23000 24100 1000 30800 32500 Cg = 34 | K1 = 120 Tab. 13.207 FT 518 3/16 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 221 35400 42400 1000 51200 54800 Cg = 58 | K1 = 120 Tab. 13.209 FT 518 1/4 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 222 63600 91900 1000 74200 116600 Cg = 115 | K1 = 120 Tab. 13.211 FT 518 3/8 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 223 68900 67100 95400 1000 123600 Cg = 180 | K1 = 120 Tab. 13.213 FT 518 1/2 PM/518 LP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 10 psi 20 psi 30 psi 60 psi...
  • Page 224 9100 8900 8700 8700 Cg = 9 | K1 = 120 Tab. 13.215 FT 518 3/32 PM/518 - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 225 15900 15900 16100 15200 Cg = 16 | K1 = 120 Tab. 13.217 FT 518 1/8 PM/518 - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 226 34300 35700 34700 34700 Cg = 34 | K1 = 120 Tab. 13.219 FT 518 3/16 PM/518 - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 227 55100 63600 62200 62900 Cg = 58 | K1 = 120 Tab. 13.221 FT 518 1/4 PM/518 - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 228 102400 111600 111300 118000 Cg = 115 | K1 = 120 Tab. 13.223 FT 518 3/8 PM/518 - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 229 81300 1000 98868 123600 Cg = 180 | K1 = 120 Tab. 13.225 FT 518 1/2 PM/518 - HP (flow rate with regulator in open position, 100% capacity) Outlet pressure Inlet pressure 110 psi 150 psi 200 psi 300 psi...
  • Page 230 TM0051ENG...

This manual is also suitable for:

Ft 518 lpFt 518 hp

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