PIETRO FIORENTINI DILOCK Series Use And Maintenance Manual
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PIETRO FIORENTINI DILOCK Series Use And Maintenance Manual

Slam-shut valve
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Dilock
Slam-shut valve
Revision A - Edition 06/2023
USE, MAINTENANCE
AND WARNING
MANUAL
EN
EN

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Summary of Contents for PIETRO FIORENTINI DILOCK Series

  • Page 1 Dilock Slam-shut valve Revision A - Edition 06/2023 USE, MAINTENANCE AND WARNING MANUAL...
  • Page 2 SLAM-SHUT VALVE INTRODUCTION REV. A Use, maintenance and warning manual...

  • Page 3: Introduction

    It is of particular importance that the personnel responsible for the equipment be trained in its use, maintenance and ap- plication of the safety instructions and procedures indicated in this manual. Revision: A COPYRIGHT 2023 © PIETRO FIORENTINI S.P.A. SLAM-SHUT VALVE INTRODUCTION REV. A...
  • Page 4 SLAM-SHUT VALVE INTRODUCTION REV. A Use, maintenance and warning manual...

  • Page 5: Revision History

    1.1 - REVISION HISTORY Revision Date Revision contents index 06/2023 First issue Tab. 1.1 SLAM-SHUT VALVE 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 - IDENTIFICATION OF THE PRODUCT ...................... 11 2.3 - REGULATORY FRAMEWORK ......................... 11 2.4 - WARRANTY ............................11 2.5 - SYMBOLS USED IN THE MANUAL ......................
  • Page 7 4 - DESCRIPTION AND OPERATION ..................29 4.1 - GENERAL DESCRIPTION ........................29 4.2 - OPERATION ............................30 4.3 - INTENDED USE ............................32 4.3.1 - ENVISAGED USE ..........................32 4.3.2 - REASONABLY FORESEEABLE MISUSE ....................32 4.3.3 - TYPES OF FLUIDS ..........................32 4.4 - TECHNICAL FEATURES/PERFORMANCE ....................
  • Page 8 7 - COMMISSIONING/MAINTENANCE EQUIPMENT............55 7.1 - LIST OF EQUIPMENT ..........................55 7.2 - EQUIPMENT NEEDED FOR THE DIFFERENT CONFIGURATIONS ............57 8 - COMMISSIONING ......................59 8.1 - GENERAL WARNINGS ........................... 59 8.1.1 - SAFETY REQUIREMENTS FOR COMMISSIONING ................59 8.2 - PRELIMINARY PROCEDURES FOR COMMISSIONING ................
  • Page 9 10 - TROUBLESHOOTING...................... 115 10.1 - GENERAL WARNINGS ......................... 115 10.2 - OPERATOR QUALIFICATION SPECIFICATION ..................116 10.3 - TROUBLESHOOTING PROCEDURES ....................116 10.4 - TROUBLESHOOTING TABLES ......................117 10.4.1 - SLAM-SHUT VALVE TROUBLESHOOTING ..................117 11 - UNINSTALLATION AND DISPOSAL ................119 11.1 - GENERAL SAFETY WARNINGS ......................
  • Page 10 SLAM-SHUT VALVE INTRODUCTION REV. A Use, maintenance and warning manual...

  • Page 11: General Information

    PIETRO FIORENTINI S.P.A. guarantees that the equipment was manufactured using the best materials, with high quality workmanship, and complies with the quality requirements, specifications and performance set out in the order. The warranty shall be considered null and void and PIETRO FIORENTINI S.P.A. shall not be liable 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 the safety of the operator and/or equipment. Symbol used to identify information of particular importance in the instruction manual. The information may also concern the safety of the personnel involved in using the equipment. Obligation to consult the instruction manual/booklet.

  • Page 13: Addressees, Supply And Storage Of The Manual

    Keep the instruction manual near the equipment, in an accessible place known by all qualified technicians involved in using and running it. PIETRO FIORENTINI S.p.A. shall not be held liable for any damage to people, animals and property caused by failure to adhere to the warnings and operating procedures described in this manual.

  • Page 14: Applied Rating Plates

    Removing nameplates and/or replacing them with other plates is strictly not allowed. Should the plates be unintentionally damaged or removed, the customer must notify PIETRO FIORENTINI S.p.A. The equipment and its accessories are provided with nameplates (Id. 1). The rating plates specify identification details of the equipment and its accessories to be provided, if necessary, to PIETRO FIORENTINI S.p.A.

  • Page 15: Glossary For Rating Plates

    2.8.1 - GLOSSARY FOR RATING PLATES The terms and abbreviations used on nameplates are described in “2.6 - Addressees, supply and storage of the manual”: Term Description Accuracy class. Slam-shut valve accuracy class due to pressure increase. AG max “OPSO” (Over pressure shut off). Slam-shut valve accuracy class due to pressure decrease.

  • Page 16: Glossary Of Measurement Units

    Term Description Full setpoint range with regard to tripping caused by decreased pressure in the pressure switch Wdsu incorporated in the slam-shut valve. This range can be obtained by adjusting but not replacing the components. Tab. 2.6 2.9 - GLOSSARY OF MEASUREMENT UNITS Type of measurement Unit of measurement Description Sm³/h...

  • Page 17: Qualified Professional Figures

    2.10 - QUALIFIED PROFESSIONAL FIGURES Qualified operators in charge of using and managing the equipment throughout its technical service life: Professional figure Definition Qualified technician able to: • perform preventive/corrective maintenance operations on all mechanical parts of the Mechanical equipment subject to maintenance or repair; maintenance techni- •...
  • Page 18 MEDIUM PRESSURE REGULATOR GENERAL INFORMATION REV. A Use, maintenance and warning manual...

  • Page 19: Safety

    3 - SAFETY 3.1 - GENERAL SAFETY WARNINGS WARNING! The equipment described in this instruction manual is: • a device subjected to pressure in pressurised systems; • normally installed in systems carrying flammable gases (for example: natural gas). WARNING! If the gas used is a combustible gas, the installation area of the equipment is defined as a “danger zone” as there are residual risks that potentially explosive atmospheres may be generated.

  • Page 20: Personal Protective Equipment

    3.2 - PERSONAL PROTECTIVE EQUIPMENT ”Tab. 3.9” shows the personal protective equipment (PPE) and its description. An obligation is associated with each sym- bol. Personal protective equipment means any equipment intended to be worn by the worker in order to protect them against one or several risks that are likely to threaten their safety or health during work.

  • Page 21: Residual Risks

    3.3 - RESIDUAL RISKS In accordance with the requirements of PED 2014/68/EU, point 1.2 of Annex I, below is an assessment of the risks as- sociated with the equipment and an indication of the principles adopted for their prevention, according to the following classification: a) Elimination and/or reduction of the risk.
  • Page 22 3.3.1 - TABLE SHOWING RESIDUAL RISKS DUE TO PRESSURE Effect and Risk and hazard Event and Cause Solution and prevention consequence a. Handling and installation with appropri- Pressurised gas • Violent impact; • Deformation; ate devices to avoid localised stress. leak.
  • Page 23 Effect and Risk and hazard Event and Cause Solution and prevention consequence Pressurised gas • Deformation; leak. a. With the exclusion of what is set out in • Cracking and slot Projection of • External loads bear- the project, the user must verify that no formation;...

  • Page 24: Table Of Residual Risks For Potentially Explosive Atmospheres

    3.3.2 - TABLE OF RESIDUAL RISKS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES “Tab. 3.11” shows the conditions that can lead to the generation of a potentially explosive atmosphere respectively for: • DILOCK pressure regulator; • the LA slam-shut valve. Considering that the silencer does not have active functional parts, in this analysis it is considered an integral part of the DILOCK regulator.
  • Page 25 Potentially Management measures in- Operating explosive Normative references cluded in the instructions for conditions atmosphere use and warning This event must be considered a rare malfunction. Breakage of the All atmospheric pressure chambers The instructions for use indicate control head dia- delimited on at least one side by a the need to meet the requirements phragm...

  • Page 26: Obligations And Prohibitions

    3.4 - OBLIGATIONS AND PROHIBITIONS The following is a list of obligations and prohibitions to be observed for the safety of the operator. It is mandatory to: • carefully read and understand the instructions for use and warning; • check whether the downstream equipment is suitably sized according to the performance required of the regulator in the actual operating condition;...

  • Page 27: Safety Pictograms

    Depending on the operating conditions, use and configuration required, the equipment may generate noise beyond the limits allowed by current legislation in the country of installation. For the value of the noise generated by the equipment and further information, contact PIETRO FIORENTINI S.p.A. ATTENTION!
  • Page 28 MEDIUM PRESSURE REGULATOR SAFETY REV. A Use, maintenance and warning manual...

  • Page 29: Description And Operation

    4 - DESCRIPTION AND OPERATION 4.1 - GENERAL DESCRIPTION The slam-shut valve DILOCK is a safety device that shuts off gas if the controlled pressure reaches the calibration value set for its tripping. DILOCK can be installed individually or upstream of a regulator. If the slam-shut valve is installed individually, the pressure switch takes the pressure downstream of the slam-shut valve.

  • Page 30: Operation

    4.2 - OPERATION pstream pressUre ownstream pressUre Fig. 4.2. Operation DILOCK SLAM-SHUT VALVE DESCRIPTION AND OPERATION REV. A Use, maintenance and warning manual...
  • Page 31 In the control head (C), the downstream pressure (Pd) acts on the diaphragm (5), which, integral with the control shaft (9), receives an antagonistic force via the springs (6, 7), which causes the pressure to rise or fall. In the event of tripping due to a pressure surge: •...

  • Page 32: Intended Use

    If no written approval is provided, use shall be considered improper. In the event of “improper use”, PIETRO FIORENTINI S.p.A. shall not be held liable for any damage caused to people or property, and any type of warranty on the equipment shall be deemed void.

  • Page 33: Technical Features/Performance

    4.4 - TECHNICAL FEATURES/PERFORMANCE The equipment DILOCK is suitable for medium and low pressure. DILOCK is a 'top entry' valve, thus allowing easy main- tenance without removing it from the line. The model DILOCK 108 is equipped with a local closing button. The main specifications of this equipment are: Technical features Maximum allowable pressure...
  • Page 34 SLAM-SHUT VALVE DESCRIPTION AND OPERATION REV. A Use, maintenance and warning manual...

  • Page 35: Transport And Handling

    5 - TRANSPORT AND HANDLING 5.1 - SPECIFIC WARNINGS FOR TRANSPORT AND HANDLING NOTICE! Transport and handling must be carried out by personnel: • qualified (specially trained); • who are familiar with accident prevention and workplace safety regulations; • authorised to use lifting equipment; •...

  • Page 36: Packaging And Fasteners Used For Transport

    PIETRO FIORENTINI S.p.A.. NOTICE! PIETRO FIORENTINI S.p.A. shall not be liable for any damage to people or property caused by accidents due to failure to comply with the instructions provided in this manual. “Tab. 5.17” shows the types of packaging used: Ref.
  • Page 37 MEDIUM PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...

  • Page 38: Physical Characteristics Of The Equipment

    5.2 - PHYSICAL CHARACTERISTICS OF THE EQUIPMENT 5.2.1 - DILOCK 108 Ø Fig. 5.4. Physical characteristics DILOCK 108 DILOCK 108 overall dimensions Dimensions [inches] 1” 1” 1/2 2” 2” Ø 154,4 1/4” Rp 1” 1” 1/2 2” 2” G/NPT 1” 1”...

  • Page 39: Dilock 507-512

    5.2.2 - DILOCK 507-512 Fig. 5.5. Physical characteristics DILOCK 507-512 DILOCK 507-512 overall dimensions Model Ø 62,5 62,5 1/4” Rp 1” 1” 1” 1” 1/2 Tab. 5.20 DILOCK 507-512 Weight [kgf] 1.73 2.11 Tab. 5.21 MEDIUM PRESSURE REGULATOR TRANSPORT AND HANDLING REV.

  • Page 40: Equipment Anchoring And Lifting Method

    5.3 - EQUIPMENT ANCHORING AND LIFTING METHOD HAZARD! Before moving the equipment, make sure that the capacity of the lifting equipment is suitable for the load. WARNING! Unloading, transport and handling activities must be carried out by operators qualified and specially trained: •...

  • Page 41: Forklift Handling Method

    5.3.1 - FORKLIFT HANDLING METHOD HAZARD! It is forbidden to: • Do not transit under suspended loads; • Do not move the load over the personnel operating in the site/plant area. WARNING! The following is not allowed on forklifts: • carrying passengers;...
  • Page 42 Step Action Image Sollevare lentamente il carico di qualche decina di centimetri e veri carne la stabilità facendo attenzio- Inclinare il montante all’indietro (verso il posto guida) per avvantaggiare il momento ribaltante e Adeguare la velocità d ne che il baricentro del carico sia posizionato al centro delle forche di sollevamento. garantire una maggiore stabilità...

  • Page 43: Crane Handling Method

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

  • Page 44: Packaging Removal

    • do not install the equipment; • contact PIETRO FIORENTINI S.p.A. and specify the details provided on the equipment nameplate. 5.4.1 - PACKAGING DISPOSAL NOTICE! Sort 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 45: Storage And Environmental Conditions

    For the replacement of the rubber parts of the equipment, please refer to “9 - Maintenance and functional checks”. NOTICE! PIETRO FIORENTINI S.p.A. recommends checking the condition of rubber parts in case of downtime or storage longer than 3 years.
  • Page 46 MEDIUM PRESSURE REGULATOR TRANSPORT AND HANDLING REV. A Use, maintenance and warning manual...

  • Page 47: Installation

    6 - INSTALLATION 6.1 - INSTALLATION PRE-REQUISITES 6.1.1 - ALLOWED ENVIRONMENTAL CONDITIONS WARNING! To safely use the equipment, in full respect of the allowed environmental conditions, follow the data shown on the regulator plate and on any accessories (refer to paragraph “2.8 - Applied rating plates”). The installation site must be suitable for the safe use of the equipment.

  • Page 48: Checks Before Installation

    6.1.2 - CHECKS BEFORE INSTALLATION The equipment does not require any further upstream safety device for protection against any overpressure with respect to its PS admissible pressure when, for the upstream reduction station, the maximum incidental downstream pressure MIPd ≤ 1.1 PS MIPd = Maximum incidental downstream pressure value (for further information, see UNI EN 12186:2014).

  • Page 49: Specific Safety Instructions For The Installation Step

    6.2 - SPECIFIC SAFETY INSTRUCTIONS FOR THE INSTALLATION STEP WARNING! Before proceeding with installation, make sure that the upstream and downstream valves installed on the line are shut off. WARNING! Installation may also take place in areas where there is a risk of explosion, which implies that all necessary prevention and protection measures have to be taken.

  • Page 50: General Information On Connections

    6.3 - GENERAL INFORMATION ON CONNECTIONS The equipment must be installed in-line with an arrow on the body pointing to the gas flow direction. They must be present in the online installation (see Fig. 6.6 and Fig. 6.7): Pos. Description 1 shut-off valve upstream of the equipment.

  • Page 51: Regulator Installation Positions

    NOTICE! When used in gas pressure reduction stations, the device must be installed at least according to the re- quirements of standards UNI EN 12186:2014 or UNI EN 12279:2007. Equipment vents must be ducted in accordance with UNI EN 12186:2014 or UNI EN 12279:2007 or the standards in force at the place of installation of the equipment.

  • Page 52: Installation Procedures

    6.5 - INSTALLATION PROCEDURES 6.5.1 - EQUIPMENT INSTALLATION PROCEDURES Step Action Place the equipment in the section of the line designated for it. Place the gaskets between the line flanges and the regulator flanges. Insert the bolts into the appropriate holes of the connecting flanges. Screw the bolts following the technical rules for tightening flanges.
  • Page 53 To calculate the flow rate, use the following formula: 1 − 0,002 = 345,92 V = gas velocity in m/sec Q = gas flow rate Sm³/h DN = nominal pipe diameter in mm Dp = regulator outlet pressure in barg NOTICE! All on-site pneumatic connections must have pipes with a minimum internal diameter of 8 mm.

  • Page 54: Post-Installation And Pre-Commissioning Checks

    If there is a multiple sensing line, connect the equipment connections as shown below: • 1 and 2 free sensing lines; • 3 and 4 regulator sensing lines (if applicable); • 5 and 6 pressure switch sensing lines. NOTICE! If there is a multiple sensing line, it is not recommended to place shut-off valves on sensing lines. In any case, follow the regulations in force in the place of installation and use of the equipment.

  • Page 55: Commissioning/Maintenance Equipment

    7 - COMMISSIONING/MAINTENANCE EQUIPMENT 7.1 - LIST OF EQUIPMENT Use of commissioning/maintenance equipment • Mechanical maintenance technician; • Electrical maintenance technician; Operator qualification • Installer; • Name of the user. WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to:...
  • Page 56 Ref. Equipment type Image T-handle hex socket wrench Phillips screwdriver Slotted screwdriver O-ring extraction tool Circlip pliers Fiorentini special key Fiorentini special key Fiorentini special tool Torx key Tab. 7.31 MEDIUM PRESSURE REGULATOR REV. A COMMISSIONING AND MAINTENANCE EQUIPMENT Use, maintenance and warning manual...

  • Page 57: Equipment Needed For The Different Configurations

    7.2 - EQUIPMENT NEEDED FOR THE DIFFERENT CONFIGURATIONS Each table is distinguished by: Term Description Key, with reference to the equipment indicated in “Tab. 7.31”. Code Code, referring to the equipment. Indicates the Nominal Diameter of the reference configuration. Length, referred to the equipment. Ref.
  • Page 58 MEDIUM PRESSURE REGULATOR REV. A COMMISSIONING AND MAINTENANCE EQUIPMENT Use, maintenance and warning manual...

  • Page 59: Commissioning

    8 - COMMISSIONING 8.1 - GENERAL WARNINGS 8.1.1 - SAFETY REQUIREMENTS FOR COMMISSIONING HAZARD! During commissioning the risks associated with any discharges to the atmosphere of flammable or nox- ious gases must be evaluated. HAZARD! In case of installation on distribution networks for natural gas, consider the risk associated with explosive mixtures (gas/air) being formed inside the piping, if the line is not subjected to inerting.

  • Page 60: Preliminary Procedures For Commissioning

    8.2 - PRELIMINARY PROCEDURES FOR COMMISSIONING HAZARD! Before commissioning the equipment, it must be ensured that any source of explosion has been eliminat- ed if there is such a danger. WARNING! Before commissioning, you need to make sure that the characteristics of the equipment are suitable for the conditions of use.

  • Page 61: Proper Commissioning Check

    8.3 - PROPER COMMISSIONING CHECK Completely sprinkle the equipment with a foaming solution (or equivalent control system) in order to check the tightness of the external surfaces of the regulator and the connections made during the installation. 8.4 - CALIBRATION OF EQUIPMENT AND ACCESSORIES INSTALLED NOTICE! To properly calibrate the equipment and accessories present, refer to the accuracy class indicated on the nameplates (see section “2.8 - Applied rating plates”).

  • Page 62: Slam-Shut Valve Commissioning Procedure Dilock

    8.5 - SLAM-SHUT VALVE COMMISSIONING PROCEDURE DILOCK 8.5.1 - CHECKING THE TIGHTNESS OF THE SLAM-SHUT VALVE DILOCK Fig. 8.13. Checking the tightness of the slam-shut valve DILOCK Step Action Check that the slam-shut valve is in the shut-off position. Open the bleed cock (6) to fully discharge the downstream section. Slowly open the upstream shut-off valve (V1).
  • Page 63 MEDIUM PRESSURE REGULATOR COMMISSIONING REV. A Use, maintenance and warning manual...

  • Page 64: Commissioning Of Dilock Slam-Shut Valve Installed Individually

    8.5.2 - COMMISSIONING OF DILOCK SLAM-SHUT VALVE INSTALLED INDIVIDUALLY Fig. 8.14. Commissioning of DILOCK slam-shut valve installed individually MEDIUM PRESSURE REGULATOR COMMISSIONING REV. A Use, maintenance and warning manual...
  • Page 65 Step Action Partially open the bleed cock (6). Check that the slam-shut valve is in the shut-off position. Partially open the upstream shut-off valve (V1), checking the pressure indicated by the upstream pressure gauge (4). Perform the internal tightness check of the LA slam-shut valve, referring to chapter “8.5.1 - Checking the tightness of the slam-shut valve DILOCK”.

  • Page 66: Commissioning Of The Dilock Valve Installed Upstream Of The Regulator

    8.5.3 - COMMISSIONING OF THE DILOCK VALVE INSTALLED UPSTREAM OF THE REGULA- Fig. 8.15. Commissioning of the DILOCK slam-shut valve installed upstream of the regulator Step Action Partially open the bleed cock (6). Check that the slam-shut valve is in the shut-off position. Partially open the upstream shut-off valve (V1), checking the pressure indicated by the upstream pressure gauge (4).
  • Page 67 Step Action a - FOR INITIAL COMMISSIONING OF THE REGULATION LINE If the pressure downstream (Pd) is not at the required calibration value, proceed as follows: • downstream pressure value (Pd) lower than required calibration value: load the setting spring by turning the adjustment ring nut clockwise (3) •...

  • Page 68: Pressurising With External Source

    8.5.4 - PRESSURISING WITH EXTERNAL SOURCE 8.5.4.1 - DILOCK INSTALLED INDIVIDUALLY It is possible to pressurise the chamber (A) of the pressure switch control head of the slam-shut valve using an external source. The introduced pressure is controlled by using pressure gauges or transducers. To correctly discharge the introduced pressure, make sure there is an additional bleed cock (18).

  • Page 69: Dilock Installed Upstream Of The Regulator

    8.5.4.2 - DILOCK INSTALLED UPSTREAM OF THE REGULATOR If the setting spring of the main regulator (1) does not reach a sufficient pressure for putting into service, you may pressur- ise the chamber (A) of the control head of the regulator (1) by using an external source. (Check that the slam-shut valve (2) is engaged to ensure gas flow).

  • Page 70: Procedure For Calibrating The Pressure Switch For The Dilock Slam-Shut Valve

    8.5.5 - PROCEDURE FOR CALIBRATING THE PRESSURE SWITCH FOR THE DILOCK SLAM- SHUT VALVE 8.5.5.1 - CALIBRATION PROCEDURE WITHOUT REGULATOR Fig. 8.18. Pressure switch for model DILOCK 108 Fig. 8.19. Pressure switch for model DILOCK 507-512 MEDIUM PRESSURE REGULATOR COMMISSIONING REV.
  • Page 71 SPRING CALIBRATION FOR MAXIMUM PRESSURE TRIP Step Action Increase the pressure in the pressure switch body (C) to check that it is correctly calibrated, using an external pressure source (Fig. 8.16). NOTICE! Check the pressure referring to the downstream pressure gauge (Fig. 8.14, ref. 5). If the slam-shut valve: •...

  • Page 72: Calibration Procedure With Regulator

    8.5.5.2 - CALIBRATION PROCEDURE WITH REGULATOR Fig. 8.20. Pressure switch for model DILOCK 108 Fig. 8.21. Pressure switch for model DILOCK 507-512 MEDIUM PRESSURE REGULATOR COMMISSIONING REV. A Use, maintenance and warning manual...
  • Page 73 SPRING CALIBRATION FOR MAXIMUM PRESSURE TRIP Step Action Increase the downstream pressure (Pd) to the slam-shut valve's tripping value, to check its correct setting, using an external pressure source (Fig. 8.17). NOTICE! Check the pressure with reference to the pressure gauge (Fig. 8.15, ref. 5) downstream of the regulator.

  • Page 74: Device Calibration

    8.6 - DEVICE CALIBRATION 8.6.1 - PRESSURE SWITCH CALIBRATION FOR THE MEDIUM PRESSURE REGULATOR DILOCK Fig. 8.22. Pressure switch for model DILOCK 108 Fig. 8.23. Pressure switch for model DILOCK 507-512 Turn the ring nut (13) for maximum tripping (11): •...

  • Page 75: Maintenance And Functional Checks

    WARNING! In case of doubt, do not perform any work. Contact PIETRO FIORENTINI S.p.A. for the necessary clarifica- tions. The management and/or use of the equipment includes interventions that are necessary as a result of normal use such as: •...
  • Page 76 Before beginning disassembly of the equipment, make sure that: • the spare parts and parts used in replacements have adequate requirements to ensure the original performance of the equipment. Use original, compliant spare parts; • the operator must have the necessary equipment (see chapter “7 - Commissioning/maintenance equipment”). NOTICE! The recommended spare parts are unambiguously identified with tags indicating: •...

  • Page 77: Periodically Checking And Inspecting The Equipment For Proper Operation

    9.2 - PERIODICALLY CHECKING AND INSPECTING THE EQUIPMENT FOR PROPER OPERATION Periodic checks and inspections Operator qualification Mechanical maintenance technician WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to: •...

  • Page 78: Routine Maintenance

    9.3 - ROUTINE MAINTENANCE 9.3.1 - GENERAL SAFETY WARNINGS HAZARD! • Put the equipment in a safe condition (close the downstream shut-off valve and then the upstream one, and drain the line completely); • ensure that the pressure upstream and downstream of the equipment is “0”. NOTICE! Before installing new sealing elements (o-rings, diaphragm, etc.), they must be checked for integrity.

  • Page 79: Replacement Frequency For Components Subject To Wear

    9.3.2 - REPLACEMENT FREQUENCY FOR COMPONENTS SUBJECT TO WEAR NOTICE! The following provisions shall apply to equipment components only. The non-metallic parts of the equipment concerned are divided into the following two categories: Preventive maintenance work Parts subject to wear and/or abrasion, where: •...
  • Page 80 Minimum Category Part description Evaluation criterion replacement frequency Shut-off valves Yearly Lubricating parts Other equipment Yearly Filter elements Filters needed Tab. 9.44 SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...

  • Page 81: Routine Maintenance Procedures

    9.4 - ROUTINE MAINTENANCE PROCEDURES Routine maintenance Operator qualification Operator qualification WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to: •...

  • Page 82: Tightening Torques

    9.4.1 - TIGHTENING TORQUES 9.4.1.1 - TIGHTENING TORQUES DILOCK 108 AND DILOCK 507-512 Fig. 9.19. Tightening torques DILOCK 108 and DILOCK 507-512 DILOCK 108 | DILOCK 507-512 Pos. Description Torque (Nm) Torque (ft - lb) DILOCK 108: Valve seat DILOCK 507-512: Valve seat •...
  • Page 83 9.4.1.2 - LA PRESSURE SWITCH TIGHTENING TORQUE Fig. 9.20. LA pressure switch tightening torques LA - BP, MP, TR HEADS Pos. Description Torque (Nm) Torque (ft - lb) Release group 2,21 Disengagement button Rod guide TSC M5X20 TORX screw M4 nut UNI 5588 TGS M4X27 TORX screw Screw M5X14 2,95...
  • Page 84 SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...

  • Page 85: Replacing Elements Subject To Wear And Abrasion

    9.4.2 - REPLACING ELEMENTS SUBJECT TO WEAR AND ABRASION 9.4.2.1 - INITIAL OPERATIONS ATTENTION! Before carrying out any work, ensure that the line on which the equipment is installed has been shut off upstream and downstream and discharged. ATTENTION! During assembly, make sure to tighten the screws as per the tables (tightening torques), according to the size for which maintenance is being carried out.

  • Page 86: Dilock Slam-Shut Valve Maintenance Procedure

    9.4.3 - DILOCK SLAM-SHUT VALVE MAINTENANCE PROCEDURE 9.4.3.1 - DILOCK SLAM-SHUT VALVE 108 Fig. 9.22. DILOCK Slam-shut valve 108 SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 87 Step Action ATTENTION! Before servicing, check that the DILOCK slam-shut valve 108 is engaged. Unscrew and remove the screws (360) together with the nuts (361). Remove the flange (310). Remove the O-ring (69) from the flange (310) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
  • Page 88 9.4.3.2 - DILOCK SLAM-SHUT VALVE 507-512 Fig. 9.23. DILOCK slam-shut valve 507-512 SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 89 Step Action ATTENTION! Before servicing, check that the DILOCK slam-shut valve 507-512 is engaged. Unscrew and remove the screws (360) together with the nuts (361). Remove the flange (310). Remove the O-ring (69) from the flange (310) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.

  • Page 90: Maintenance Procedure For The La Pressure Switch

    9.4.4 - MAINTENANCE PROCEDURE FOR THE LA PRESSURE SWITCH 9.4.4.1 - LA PRESSURE SWITCH VERSION BP/MP FOR DILOCK 108 1” 1” 1/2 - 2” Fig. 9.24. LA BP/MP DILOCK 108 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 91 Step Action ATTENTION! Before servicing, remove the LA pressure switch by unscrewing the screws (Fig. 8.22, ref. 48) of the DILOCK 108 valve body. Unscrew and remove the locking nut (628). NOTICE! During this step, hold the spacer (626) in place. Remove and replace the plug (627).
  • Page 92 1” 1” 1/2 - 2” LA BP/MP DILOCK 108 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 93 Step Action Remove and replace the O-rings (535, 536, 633), taking care to lubricate them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution. Insert the rod guide (533) together with the O-rings (535, 536, 633). Fit the washer (532).
  • Page 94 1” 1” 1/2 - 2” LA BP/MP DILOCK 108 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 95 Step Action Unscrew and remove the screws (510) together with the nuts (511). Remove the cover (550) from the body (501). Remove the diaphragm assembly: diaphragm (547), diaphragm protection disc (502), washer (519), diaphragm support (518), compression bushing (520), locking screw (521). Undo and remove the locking screw (521).
  • Page 96 9.4.4.2 - LA PRESSURE SWITCH VERSION TR FOR DILOCK 108 1” 1” 1/2 - 2” Fig. 9.25. LA TR DILOCK 108 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 97 Step Action ATTENTION! Before servicing, remove the LA pressure switch by unscrewing the screws (Fig. 8.22, ref. 48) of the DILOCK 108 valve body. Unscrew and remove the locking nut (628). NOTICE! During this step, hold the spacer (626) in place. Remove and replace the plug (627).
  • Page 98 1” 1” 1/2 - 2” LA TR DILOCK 108 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 99 Step Action Remove and replace the O-rings (535, 536, 633), taking care to lubricate them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution. Insert the rod guide (533) together with the O-rings (535, 536, 633). Fit the washer (532).
  • Page 100 1” 1” 1/2 - 2” LA TR DILOCK 108 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 101 Step Action Unscrew and remove the screws (510) together with the nuts (511). Remove the cover (550) from the body (501). Remove the diaphragm assembly: diaphragm (547), diaphragm protection disc (502), washer (519), diaphragm support (518), compression bushing (520), locking screw (521). Undo and remove the locking screw (521).
  • Page 102 9.4.4.3 - LA PRESSURE SWITCH VERSION BP/MP FOR DILOCK 507-512 Fig. 9.26. LA BP/MP DILOCK 507-512 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 103 Step Action ATTENTION! Before servicing, remove the LA pressure switch by unscrewing the screws (Fig. 8.23, ref. 48)of the DILOCK 507-512 valve body. Unscrew and remove the locking nut (628). NOTICE! During this step, hold the spacer (626) in place. Remove and replace the plug (627).
  • Page 104 LA BP/MP DILOCK 507-512 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 105 Step Action Position and secure the spacer (626). NOTICE! During this phase, keep the rod (504) still. Fit the plug (627). Insert and secure the locking nut (628) according to the tightening torques: • Tab. 9.47 NOTICE! Apply threadlocker glue. Insert and secure the locking nut (513) according to the tightening torques: •...
  • Page 106 LA BP/MP DILOCK 507-512 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 107 Step Action Insert and fasten the screws (510) together with the nuts (511) according to the tightening torques: • Tab. 9.47 NOTICE! Screw in as shown in the diagram at “9.4.2.2 - Cross diagram for tightening screws”. Insert spring guide (540). Insert spring holder (541).
  • Page 108 9.4.4.4 - LA PRESSURE SWITCH VERSION TR FOR DILOCK 507-512 Fig. 9.27. LA TR DILOCK 507-512 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 109 Step Action ATTENTION! Before servicing, remove the LA pressure switch by fastening the screws (Fig. 8.23, ref. 48)of the DILOCK 507-512 valve body. Unscrew and remove the locking nut (628). NOTICE! During this step, hold the spacer (626) in place. Remove and replace the plug (627).
  • Page 110 LA TR DILOCK 507-512 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 111 Step Action Position and secure the spacer (626). NOTICE! During this phase, keep the rod (504) still. Fit the plug (627). Insert and secure the locking nut (628) according to the tightening torques: • Tab. 9.47 NOTICE! Apply threadlocker glue Insert and secure the locking nut (513) according to the tightening torques: •...
  • Page 112 LA TR DILOCK 507-512 pressure switch SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...
  • Page 113 Step Action Insert and fasten the screws (510) together with the nuts (511) according to the tightening torques: • Tab. 9.47 NOTICE! Screw in as shown in the diagram at “9.4.2.2 - Cross diagram for tightening screws”. Insert spring guide (540). Insert spring holder (541).

  • Page 114: Procedure For Recommissioning After Maintenance

    9.4.5 - PROCEDURE FOR RECOMMISSIONING AFTER MAINTENANCE NOTICE! For the re-commissioning procedure, please follow the instructions in section “8.5 - Slam-shut valve com- missioning procedure”. SLAM-SHUT VALVE MAINTENANCE AND FUNCTIONAL CHECKS REV. A Use, maintenance and warning manual...

  • Page 115: Troubleshooting

    • qualified and authorised to carry out activities related to the equipment. WARNING! PIETRO FIORENTINI S.p.A. shall not be held liable for any damage to people and property due to services: • other than those described; • performed according to methods other than those specified;...

  • Page 116: Operator Qualification Specification

    10.2 - OPERATOR QUALIFICATION SPECIFICATION Commissioning • Mechanical maintenance technician; • Electrical maintenance technician; Operator qualification • Installer; • Name of the user. WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to: •...

  • Page 117: Troubleshooting Tables

    10.4 - TROUBLESHOOTING TABLES NOTICE! See chapter “9 - Maintenance and functional checks” for pictures of the DILOCK slam-shut valve. 10.4.1 - SLAM-SHUT VALVE TROUBLESHOOTING Failure Possible causes Intervention Slam-shut valve failed to trip Rod (504) locked in opening Clean and reposition if needed Broken diaphragm (517) Replace External leak...
  • Page 118 MEDIUM PRESSURE REGULATOR TROUBLESHOOTING REV. A Use, maintenance and warning manual...

  • Page 119: Uninstallation And Disposal

    11 - UNINSTALLATION AND DISPOSAL 11.1 - GENERAL SAFETY WARNINGS HAZARD! Make sure that there are no potentially explosive ignition sources in the work area set up to uninstall and/ or dispose of the equipment. WARNING! Before proceeding with uninstallation and disposal, make the equipment safe by disconnecting it from any power supply.

  • Page 120: Disposal Information

    11.5 - DISPOSAL INFORMATION NOTICE! Bear in mind that the laws in force in the country of installation must be complied with. Illegal or improper disposal involves the application of the penalties provided for by the legislation in force in the country of installation. NOTICE! Proper disposal prevents damage to humans and the environment and promotes the reuse of precious raw materials.

  • Page 121: Recommended Spare Parts

    If non-original spare parts are used, PIETRO FIORENTINI S.p.A. their declared performance cannot be guaranteed. It is recommended to use original spare parts PIETRO FIORENTINI S.p.A. PIETRO FIORENTINI S.p.A. shall not be held liable for any damage caused by using non-original parts. 12.2 - HOW TO REQUEST SPARE PARTS NOTICE! For specific information, please refer to the sales network of PIETRO FIORENTINI S.p.A.
  • Page 122 MEDIUM PRESSURE REGULATOR RECOMMENDED SPARE PARTS REV. A Use, maintenance and warning manual...

  • Page 123: Calibration Tables

    13 - CALIBRATION TABLES 13.1 - CALIBRATION TABLES The spring setting ranges for the DILOCK regulator are shown in the tables below: DILOCK BP Pos. Spring item code Spring colour Min. Max. 64470137 0.015 0.019 64470024 White 64470068 Yellow 0.02 0.029 64470024 White...
  • Page 124 TM0045ENG...

This manual is also suitable for:

Dilock 108Dilock 507Dilock 512

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