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PERSTA 990 ST Operating Instructions Manual

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Operating instructions
High pressure strainer
990 ST/990 SF
Read the instructions prior to performing any task!

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Summary of Contents for PERSTA 990 ST

  • Page 1 Operating instructions High pressure strainer 990 ST/990 SF Read the instructions prior to performing any task!
  • Page 2 Stahl-Armaturen PERSTA GmbH Mülheimer Str. 18 59581 Warstein-Belecke Telephone: +49 2902 762-900 Fax: +49 2902 767-03 Email: info@persta.de Internet: www.persta.com Translation of the original operating instructions Pers-29961-DE, 2, en_GB © Stahl-Armaturen PERSTA GmbH 2014 High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 3 Connection diagram provided Risk analysis according to Pressure Equipment Directive Risk analysis as per the Machinery Directive Technical data sheet Bolt tightening torques according to the website: www.persta.com And other documents included in the delivery 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 4 Mülheimer Str. 18 turen PERSTA GmbH 59581 Warstein, Germany Phone: +49 2902 762-900 Fax: +49 2902 767-03 e-mail: info@persta.de Tab. 1: Revision overview Revision number Change/supplement Date “ Intended Updates to chapter 05/05/2021 use”. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 5: Table Of Contents

    Functional description............. 25 3.1 Mode of operation of the high pressure strainer..25 3.2 External seals............. 26 3.2.1 High pressure strainer 990 ST......... 26 3.2.2 High pressure strainer 990 SF......... 27 3.3 Screen cylinder............28 3.3.1 High pressure strainer 990 ST......... 28 3.3.2 High pressure strainer 990 SF.........
  • Page 6 Faults and fault correction..........65 8.1 Safety notices for fault correction....... 65 8.2 Fault table..............67 Dismantling, disposal............69 9.1 Safety notice for dismantling and disposal....69 9.2 Dismantling..............71 9.3 Disposal..............72 Index................... 73 High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 7: Overview

    Overview Overview High pressure strainer 990 ST Fig. 1: High pressure strainer 990 ST 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 8 Forklift Forklift with sufficient load-bearing capacity for transport of valves. Hoist Hoist with sufficient load-bearing capacity for transporting valves and components. Pin puncher Mandrel-like tool for punching out the segment rings. High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 9 Overview Sling gear Functional and approved gear for attaching valves and compo- nents on the hoist. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 10 Overview High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 11: Safety

    Safety instructions may refer to specific, individual instructions. instructions Such safety instructions are integrated into the specific instruction, so that the flow of reading is not interrupted during performance of the task. The signal words described above are used. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 12 Symbol Explanation Step-by-step instructions ð Results of an action References to sections of these operating instructions and other applicable docu- ments Lists without a defined sequence High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 13: Intended Use

    Intended use includes compliance with all the information con- tained in this manual. Any use that deviates from the intended use or any other form of use constitutes misuse. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 14: Safety Signs

    Rating plate The rating plate is on the valve. Depending on the version, the fol- lowing information is on the rating plate: Confirmation number Article number Year of manufacture Nominal diameter Nominal pressure/design data High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 15: Residual Risks

    Depending on the version the valve can be used in hazardous areas. There is life-threatening danger if the rules of behaviour are not complied with within these areas. – Ensure that tasks on the valve can be executed at the installation site. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 16: Mechanical Hazards

    Protective gloves, protective goggles. – Prior to performing tasks on these components, allow them to cool down/warm up to ambient temperature. – Have the protective insulation provided by the operating company attached. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 17: Hazards Due To Hazardous Substances And Operating Materials

    – Wear protective equipment: Protective gloves, safety footwear, protective goggles, protective work clothing. – Soak up escaped pickling medium without delay and dispose of it in an environmentally respon- sible manner. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 18: Behaviour In The Event Of An Emergency

    High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 19 In the case of valves with different pipe connections on the inlet and outlet ends, the operating company must ensure that when opening the valve the respective pipe connection is not exposed to impermissibly high pressure or an impermissibly high temperature. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 20: Personnel Requirements

    The trained person (hoist) has been instructed, and can provide evidence of this, by the operator on how to handle the hoist and sling gear and the potential hazards associated with improper behaviour. High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 21 For better tracking an instruction log must be maintained with at least the following content: Date of the instruction Name of the instructed person Content of the instruction Name of the instructor Signatures of the instructed person and of the instructor 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 22: Personal Protective Equipment

    Safety footwear Safety footwear protects the feet from crushing injuries, falling parts and slipping on a slippery substrate. Safety goggles The protective goggles protect the eyes from flying parts and liquid splashes. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 23: Spare Parts

    Storage of spare parts Please see Ä Chapter 4.4 “Storage of spare parts” on page 33 for information on storing spare parts. Ordering spare parts Order spare parts from Stahl-Armaturen PERSTA GmbH, speci- fying: Valve type, Year of manufacture, Nominal diameter,...

  • Page 24: Environmental Protection

    Substances used The following environmentally harmful substances are used: Residue of the pipeline medium Pickling medium Anticorrosive High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 25: Functional Description

    The filtering of the foreign objects can be adapted by changing the screen. To replace the screen cylinder (Fig. 4/2), the cover (Fig. 4/3) or pressure sealing bonnet (Fig. 4/4) needs to be dis- mounted. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 26: External Seals

    External seals > High pressure strainer 990 ST 3.2 External seals 3.2.1 High pressure strainer 990 ST Fig. 5: High pressure strainer 990 ST: External seals The body is sealed against the environment via the gasket ring (Fig. 5/1). The required sealing force is generated by the tension of the stud bolts in the body.

  • Page 27: High Pressure Strainer 990 Sf

    The required sealing force is not generated by the screws, rather it is generated by the internal pressure in the body. The screws (Fig. 6/3) are only used to pre-tension the sealing connection and in operation are only tightened hand tight. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 28: Screen Cylinder

    Functional description Screen cylinder > High pressure strainer 990 SF 3.3 Screen cylinder 3.3.1 High pressure strainer 990 ST Fig. 7: Screen cylinder The entire screen unit consists of the screen cylinder (Fig. 7/1) and the packing ring (Fig. 7/2).

  • Page 29: Connections

    3.4 Connections Connection in the pipe Depending on the version the high pressure strainer can be mounted in the pipe, as Butt-weld valve, Flanged valve, Socket weld valve or Special connection valve 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 30 Functional description Connections High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 31: Transport And Storage

    – If present: Use the provided ring bolts and ring nuts. – Protect valves from impacts. – Do not throw valves. – Only remove the packaging just before installa- tion. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 32: Transport Of Packages

    Store valve in closed status (delivery status). Do not store outdoors. Store in a dry and dust-free location. Do not expose to any aggressive media. Protect from direct sunlight. Avoid mechanical vibrations. Storage temperature: 15–35°C. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 33: Storage Of Spare Parts

    Due to incorrect storage of soft-sealing spare parts, the service life may be reduced. – Store soft-sealing elements, plastics or lubri- cants in a dry location at room temperature where they are protected against light. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 34 Transport and storage Storage of spare parts High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 35: Installation

    – Contacting Stahl-Armaturen PERSTA GmbH Ä “Customer Service - customer service ( Stahl-Armaturen PERSTA GmbH” on page 4), specifying the serial number, or – Referring to the manufacturer’s website (address on page 2). 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 36: Before The Installation

    Bolt all the flange holes together with the connection ele- ments using the permissible tightening torque. Ensure that the pipe and valve do not leak. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 37: After The Installation

    – Wear protective equipment: Protective gloves, safety footwear, protective goggles, protective work clothing. – Soak up escaped anticorrosive without delay and dispose of it in an environmentally respon- sible manner. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 38: Pickling The Valve

    Release the pipe after successful tests. For longer idle periods after the hydrostatic pressure test, completely open the valve. For longer idle periods after the hydrostatic pressure test, replace the anticorrosive in consultation with the manufac- turer. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 39: Applying Thermal Insulation

    Personnel: Pipeline engineer Protective equipment: Safety goggles Protective work clothing Protective gloves Safety footwear If necessary have the thermal insulation fitted by the oper- ating company. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 40 Installation After the installation > Applying thermal insulation High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 41: Commissioning

    – Wear protective equipment: Protective gloves, safety footwear, protective goggles, protective work clothing. – Soak up escaped pumping medium without delay and dispose of it in an environmentally responsible manner. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 42 – Contacting Stahl-Armaturen PERSTA GmbH customer service ( Ä “Customer Service - Stahl-Armaturen PERSTA GmbH” on page 4), specifying the serial number, or – Referring to the manufacturer’s website (address on page 2). High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 43: Prior To Commissioning

    Failure to comply with the heating-up times/cooling times! In compliance with the system-specific heating-up/cooling speed, fill the pipe or open the shut-off pipe section. Check the cover for leaks. Check the pipe connection flanges for leaks. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 44 Commissioning Executing the commissioning process If necessary, recheck tightening torques in accordance with the manufacturer’s/system planner’s specifications. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 45: Maintenance

    – Wear protective equipment: Protective gloves, safety footwear, protective goggles, protective work clothing. – Soak up escaped pumping medium without delay and dispose of it in an environmentally responsible manner. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 46 Protective gloves, protective goggles. – Prior to performing tasks on these components, allow them to cool down/warm up to ambient temperature. – Have the protective insulation provided by the operating company attached. High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 47 – Only use original spare parts from Stahl-Arma- turen PERSTA GmbH or spare parts approved by Stahl-Armaturen PERSTA GmbH. – If you have any questions or if anything is unclear, always contact our customer service Ä...
  • Page 48 – Mount packing ring in the guide bush in the cover with the metal cap in the direction of the screen cylinder. – Replace packing ring each time the screen cyl- inder is dismounted. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 49: Maintenance Schedule

    If regular inspections indicate increased wear, the required mainte- nance intervals must be shortened appropriately in accordance with the actual indications of wear. For questions concerning main- tenance tasks and intervals, contact Stahl-Armaturen PERSTA Ä “Customer Service - Stahl-Armaturen GmbH customer service ( PERSTA GmbH”...

  • Page 50: Cleaning The Screen Cylinder

    Falling cover! Ä Chapter 7.3.3.1 “Replacing Carry out work according to the high pressure strainer 990 ST’s gasket ring” on page 52, step 1–5. ð In installations with the cover facing downwards, filtered material will fall out of the screen cylinder.
  • Page 51 Remove the filtered material from the body (vacuum off if necessary). Carry out work according to Ä Chapter 7.3.3.2 “Replacing the high pressure strainer 990 SF’s gasket ring” on page 55, step 7–17. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 52: Replacing The Gasket Ring

    Maintenance Maintenance tasks > Replacing the gasket ring 7.3.3 Replacing the gasket ring 7.3.3.1 Replacing the high pressure strainer 990 ST’s gasket ring Personnel: Industrial mechanic (high pressure valves) Trained person (hoist) Protective equip- Industrial hard hat ment: Safety goggles...
  • Page 53 Screen cylinder falling out! With a second person, fit the cover (Fig. 14/2) onto the stud bolts (Fig. 14/1) of the body. Have a second person safeguard the cover from falling. Fig. 14: Attaching the cover 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 54 (Fig. 16/1–5). Ä Chapter 6 “Com- Carry out the tasks for commissioning ( missioning” on page 41). Fig. 16: Tightening nuts in a cross pat- tern (number of nuts/stud bolts can vary) High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 55 Danger of injury due to heavy compo- nents! With a suitable hoist, lift the cover out of the body (Fig. 18/3)together with the gasket ring, support ring and screen cylinder (Fig. 19/1–4). Fig. 18: Removing the segment ring 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 56 Risk of damage due to mechanical work on the contact surfaces! Ensure that all support surfaces are blank metal and undam- aged. Fig. 19: Support ring, gasket ring, cover, screen cylinder Support ring Gasket ring Cover Screen cylinder High pressure strainer 990 ST/990 SF 20.05.2021...
  • Page 57 With a suitable hoist, insert the cover (Fig. 20/3) into the body (Fig. 20/4). Mount the new gasket ring (Fig. 20/2). Place the support ring (Fig. 20/1) on the gasket ring (Fig. 20/2). Fig. 20: Inserting cover 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 58 Screw the clamping lid tight in a cross pattern using the nuts (Fig. 22/1). ð The cover seal will be pre-tensioned. Ä Chapter 6 “Com- Carry out the tasks for commissioning ( missioning” on page 41). Fig. 22: Fastening the clamping lid High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 59: Replacing The Screen Cylinder

    A depressurised state must have been established. Ä Chapter 7.3.3.1 “Replacing Carry out work according to the high pressure strainer 990 ST’s gasket ring” on page 52, step 1–9. ð Cover is removed and sealing gasket has been replaced. Dismounting the screen cylinder Remove the screen cylinder (Fig.
  • Page 60 (Fig. 25/2) is not aligned in the outlet direction of the body. Carry out work according to Ä Chapter 7.3.3.1 “Replacing the high pressure strainer 990 ST’s gasket ring” on page 52, step 10–14. Better flow-through is achieved with a longitudinal seam of the screen cylinder that is not aligned in the outlet direction of the valve.
  • Page 61 NOTICE! Risk of damage due to mechanical work Fig. 26: Fastening the screen cylinder on the contact surfaces! Ensure that all support surfaces are blank metal and undam- aged. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 62 Ä Chapter 7.3.3.2 “Replacing the high pressure strainer 990 SF’s gasket ring” on page 55, step 7–17. ð The clamping lid is mounted and the gasket ring has been replaced. Fig. 28: Fastening the screen cylinder High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 63: Executing Final Tests On The Sealed Pressure Sealing Bonnet

    Subject the valve to the permissible test pressure. Ensure that the valve does not leak. If necessary, recheck tightening torque in accordance with the manufacturer’s specifications. Retighten the clamping lid’s nuts (Fig. 29/1) by hand. Fig. 29: Clamping lid 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 64 Maintenance Maintenance tasks > Executing final tests on the sealed pressure sealing bonnet High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 65: Faults And Fault Correction

    – If in doubt, obtain the assistance of experienced persons or contact Stahl-Armaturen PERSTA GmbH Customer Service ( Ä “Customer Service - Stahl-Armaturen PERSTA GmbH” on page 4). – Comply with the following before restarting the plant: – Ensure that all fault correction tasks have...
  • Page 66 – Wear protective equipment: Protective gloves, safety footwear, protective goggles, protective work clothing. – Soak up escaped pumping medium without delay and dispose of it in an environmentally responsible manner. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 67: Fault Table

    59). valves) valve is greater than 2 Wrong flow direction Install the correct flow direction Industrial mechanic Ä “Flow direction arrow” (high pressure on page 15). valves) 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 68 Faults and fault correction Fault table High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 69: Dismantling, Disposal

    – Wear protective equipment: Protective gloves, safety footwear, protective goggles, protective work clothing. – Soak up escaped pumping medium without delay and dispose of it in an environmentally responsible manner. 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 70 – Transport valves with a suitable hoist or forklift. – If possible, lift valves via the bonnet. – Use approved and functional sling gear. – Safeguard valves and components from falling over. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 71: Dismantling

    Use a suitable hoist to remove the valve from the pipe and set it down so that it is safeguarded against falling over. Properly clean assemblies and components and take them apart. In this process comply with local occupational health and safety regulations. 20.05.2021 High pressure strainer 990 ST/990 SF...

  • Page 72: Disposal

    – If in doubt, contact the local authorities or spe- cialist disposal companies for information regarding the environmentally compatible dis- posal. High pressure strainer 990 ST/990 SF 20.05.2021...

  • Page 73: Index

    Cover ......67 Segment ring ......27 20.05.2021 High pressure strainer 990 ST/990 SF...
  • Page 74 System pressure test ....38 Visually checking the valve ....49 High pressure strainer 990 ST/990 SF 20.05.2021...

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990 sf

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