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PERSTA 640 AA Operating Instructions Manual

Swing check valves
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Operating instructions
Swing check valves
640 AA / 640 AE
Read the instructions prior to performing any task!

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  • Page 1 Operating instructions Swing check valves 640 AA / 640 AE Read the instructions prior to performing any task!
  • Page 2 Mülheimer Str. 18 59581 Warstein-Belecke Germany Telephone: +49 2902 762-02 Fax: +49 2902 767-03 Email: info@persta.de Internet: www.persta.com Translation of the original operating instructions Dok.-Nr. 6416.DE.STD.06.2015, 3, en_GB © Stahl-Armaturen PERSTA GmbH 2015 Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 3 Scope of the document These instructions apply to the following versions of the 640 AA series of the swing check valve: Series Nominal diam-...
  • Page 4 PERSTA GmbH 59581 Warstein Germany Phone: +49 2902 762-900 Fax: +49 2902 767-03 e-mail: info@persta.de Revision overview Revision number Change/Supplemented informa- Date tion “ Intended Updates to chapter 05/05/2021 use”. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 5: Table Of Contents

    5.4.4 Applying thermal insulation........42 5.4.5 Setting the closing support (optional)...... 43 Commissioning..............47 6.1 Safety instructions for commissioning......47 6.2 Prior to commissioning..........49 6.3 Performing the commissioning process...... 49 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 6 8.3.2 Detaching and attaching the swing check plate..64 8.3.3 Replacing the gland packing........75 Removal, disposal............83 9.1 Safety instructions for dismantling......83 9.2 Removal..............85 9.3 Disposal..............86 Index................... 87 Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 7: Overview

    Tools The following tools are required for the tasks described in the oper- ating instructions: Forklift Forklift with sufficient load-bearing capacity for transport of valves. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 8 Snap ring pliers Tool for fitting and removing snap rings. Tools for machining sealing surfaces and slide faces Grinding tools, such as fine emery cloth, plastic or wooden tools. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 9: Safety

    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 Swing check valves 640 AA / 640 AE...
  • Page 10 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 Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 11: 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 Swing check valves 640 AA / 640 AE...

  • Page 12: Safety Signs

    Flow direction arrow The flow direction is indicated by an arrow on the valve. Pipeline medium flowing in the direction of the arrow opens the swing check valve and flows through the valve. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 13: Residual Risks

    There is a danger of fall injuries in the area of use of the valve. – Install cable and connection lines in such a manner that there are no trip hazards. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 14: Mechanical Dangers

    – Prior to performing work on these components, allow them to cool down or warm up to the ambient temperature. – Have the thermal insulation provided by the operating company attached. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 15: Dangers Due To Hazardous Substances And Operating Materials

    – Wear the following protective equipment: pro- tective gloves, safety footwear, safety goggles, protective work clothing. – Collect any pumped medium that has run out without delay and dispose of it in an environ- mentally responsible manner. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 16 – brushed with wire brushes. – Sealing surfaces and slide faces must be – dressed using a fine emery cloth, – machined with suitable grinding tools or – scraped off with plastic or wooden tools. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 17: Behaviour In The Event Of An Emergency

    The operating company must ensure that all personnel who are to handle the valve have read and understood this manual. In addition, the operating company must train the personnel and inform them of the hazards at regular intervals. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 18: Personnel Requirements

    Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 19 Comply with the age-specific and job-specific regulations that apply at the site of implementation when selecting personnel. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 20: Personal Protective Equipment

    Description of the personal protec- The personal protective equipment is described below: tive equipment Chemical resistant safety gloves Chemical resistant safety gloves are intended to protect hands against aggressive chemicals. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 21: Spare Parts

    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 organisation (contact details on page 4). 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 22 Order spare parts from Stahl-Armaturen PERSTA GmbH, with specification of valve type, Year of manufacture, Nominal diameter, Nominal pressure, Material, Article number, Confirmation number, Consignment number (if possible). See page 3 for contact details. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 23: Environmental Protection

    Substances used The following environmentally harmful substances are used: Residue of the pipeline medium Pickling medium Anticorrosive 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 24 Safety Environmental protection Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 25: Functional Description

    If the flow direction of the pipeline medium is reversed ( ), the swing check valve closes the valve. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 26: Attachment Of The Swing Check Plate (Type-Specific)

    The valve shaft is suspended in the body at both ends. To remove the swing check plate, locking bolts (Fig. 4/1) can be removed and the valve shaft can be driven out of the body. Fig. 4: Guided-through valve shaft Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 27 When the body cover is removed, the swing check Ä “Version plate is also removed from the body ( with valve shaft attached to the body cover” on page 64. Fig. 5: Attachment to the cover 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 28: Optional Equipment

    In addition, a weight (Fig. 6/4) can be fitted on the end of the lever. The weight also supports closing. To adjust the closing support, the preliminary spring tension can be Ä “Version with spring” on page 44). changed ( Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 29 In addition, a weight (Fig. 7/3) can be fitted on the end of the lever. The weight also supports closing. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 30 (Fig. 8/3) attached to the end of the lever supports closing. To adjust the closing support, the position of the weight on the Ä “Version with weight” on page 43). lever can be changed ( Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 31: External Seal

    (Fig. 10/2) from the environ- ment. The gland packing can be replaced by employees of the operating Ä Chapter 8.3.3 “Replacing the gland packing” company ( on page 75). Fig. 10: Gland packing 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 32: Connections

    Functional description Connections 3.5 Connections Connection in the pipe Depending on the version, the swing check valve can be fitted in the pipe as a: Butt-weld valve, Flanged valve, Special connection valve Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 33: Transport And Storage

    – If present: Use the provided ring bolts and ring nuts. – Protect valves from impacts. – Do not through valves. – Only remove the packaging just before installa- tion. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 34: Transport Of Packed Items

    Slowly lift the valve and identify the position of the centre of gravity. Transport the valve as close to the ground as possible. After setting down the valve, secure it against falling over. Fig. 11: Welded-on attachment points Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 35 Make sure that the valve is fixed in place on the pallet. Transport the pallet to the installation location. Unload and continue transporting heavy valves from the pallet with a suitable hoist. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 36: Storage Of The Valve

    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. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 37: Installation

    – contacting Stahl-Armaturen PERSTA GmbH customer service (contact details on page 4) specifying the serial number, or – refer to the manufacturer’s website (address on page 2). 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 38: Before The Installation

    Ä “Flow direction arrow” Pay attention to the flow direction ( on page 12). Make sure that there are no objects or materials in the inte- rior of the valve. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 39: Installing The Valve

    Bolt all the flange bores together with the connection ele- ments using the permissible tightening torque. Make sure that the pipe and valve do not leak. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 40: 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. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 41: Pickling The Valve

    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. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 42: Applying Thermal Insulation

    Valve shaft guided outwards For valve shaft guided outwards: Make sure that the function (optional) of all moving components is not impaired and that they remain permanently accessible and capable of being monitored. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 43: Setting The Closing Support (Optional)

    Shift the weight (Fig. 14/1) on the lever arm: Weight towards hub (Fig. 14/2): reduces the closing sup- port Weight towards the end of the lever arm (Fig. 14/3): increases the closing support Fig. 14: Setting the weight 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 44 Fig. 15: Tightening the threaded con- nection Version with spring Personnel: Pipeline engineer Protective equipment: Protective work clothing Safety footwear Undo the nut (Fig. 16/1) of the tensioning device. Fig. 16: Undoing the nut Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 45 Tightening the adjusting screw (screwing it out (Fig. 17/1)): increases the closing support (higher preliminary spring tension) Fig. 17: Setting the preliminary spring tension Tighten the nut (Fig. 18/1) of the tensioning device. Fig. 18: Tightening the nut 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 46 Installation After the installation > Setting the closing support (optional) Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 47: Commissioning

    – Wear the following protective equipment: pro- tective gloves, safety footwear, safety goggles, protective work clothing. – Collect any pumped medium that has run out without delay and dispose of it in an environ- mentally responsible manner. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 48 – Make sure presence is prohibited in the vicinity of the valve. – Mark or cordon off the danger zone. – Established a depressurised state before working on the valve. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 49: Prior To Commissioning

    Check the pressure sealing bonnet for leaks. Examine the pipe connection flanges for leaks. If necessary, recheck the tightening torques in accordance with the manufacturer’s specifications. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 50 Commissioning Performing the commissioning process Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 51: Maintenance

    Pressurised components WARNING! Danger of injury due to pressurised compo- nents! Tasks on pressurised components can result in serious injuries. – Establish depressurised status before working on the valve. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 52 – Prior to performing work on these components, allow them to cool down or warm up to the ambient temperature. – Have the thermal insulation provided by the operating company attached. Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 53 GmbH customer service (contact details on page 4) if anything is unclear. Spare parts recommendation in the scope of delivery The spare parts recommendation is included in the scope of delivery of the valve. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 54 – processed with wire brushes. – Sealing surfaces and slide faces must be – pulled off with emery cloth, – processed with suitable abrasive tools or – scraped off with plastic tools/wooden tools. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 55: Maintenance Schedule

    Safety footwear Examine the body cover for leaks. If necessary, replace the Ä Chapter 8.3.1 “Replacing the body cover gasket” gasket ( on page 61). Examine the pipe connection flanges for leaks. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 56: After Maintenance

    Make sure that the valve does not leak. If necessary, recheck tightening torques in accordance with the manufacturer’s specifications. Carry out the work for commissioning ( Ä Chapter 6.3 “Per- forming the commissioning process” on page 49). Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 57: Faults And Fault Correction

    – Ensure that nobody is in the danger zone. – Ensure that all covers and protective devices are installed correctly and that they function properly. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 58 – Wear the following protective equipment: pro- tective gloves, safety footwear, safety goggles, protective work clothing. – Collect any pumped medium that has run out without delay and dispose of it in an environ- mentally responsible manner. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 59: Fault Table

    PERSTA GmbH customer service range) (contact details on page 4) or an Ä Chapter external specialist company ( 8.3.2 “Detaching and attaching the swing check plate” on page 64). 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 60 Replace the gland packing ( Industrial mechanic through leaking tight 8.3.3 “Replacing the gland packing” (for valves within the (for version with on page 75) normal pressure valve shaft guided range) outwards) Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 61: Fault Correction Work

    A depressurised state must have been established. Detaching the body cover Undo and remove the nuts (Fig. 19/1) on the body cover (Fig. 19/2). Fig. 19: Undoing the nuts on the body cover 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 62 Make sure that all contact surfaces are metallically bright and undamaged. Insert the new gasket (Fig. 21/1) into the groove (Fig. 21/2) in the body. Fig. 21: Replacing the gasket Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 63 (Fig. 23/1) on to the stud bolts of the body. WARNING! Hazard risk due to wrong tightening tor- ques! Tighten the nuts (Fig. 23/1) to the prescribed tightening torque crosswise. Fig. 23: Bolting on the body cover 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 64: Detaching And Attaching The Swing Check Plate

    Attach the body cover as described in “Replacing the body cover gasket” on page 61/steps 9–15. Ä Chapter 6.3 “Per- Carry out the work for commissioning ( forming the commissioning process” on page 49). Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 65 (Fig. 24/1). Pull the valve shaft (Fig. 24/1) out of the retaining element (Fig. 24/4) in the body and the disc lever (Fig. 24/2). Fig. 24: Detaching the valve shaft 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 66 Fig. 26: Attaching the valve shaft Ä Chapter Replacing the body cover gasket Replace the body cover gasket as described in 8.3.1 “Replacing the body cover gasket” on page 61/steps 5– Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 67 The valve must have cooled down/heated up to ambient tem- perature. A depressurised state must have been established. Ä Chapter 8.3.1 Detach the body cover as described in “Replacing the body cover gasket” on page 61/steps 1–4. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 68 Undo and remove the locking bolts (Fig. 28/1 und 4) on both sides of the body. Remove the sealing elements (Fig. 28/2 und 3) from the grooves in the body. Fig. 28: Undoing the locking bolts Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 69 Carefully drive the valve shaft (Fig. 30/1) through the mount in the disc lever into the opening on the opposite side in the body. Fig. 30: Driving in the valve shaft 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 70 8.3.1 “Replacing the body cover gasket” on page 61/steps 5– Attaching the body cover Attach the body cover as described in Ä Chapter 8.3.1 “Replacing the body cover gasket” on page 61/steps 9–15. Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 71 (Fig. 33/3). Remove the brackets (Fig. 33/3, 2 pieces). Fasten the ring bolt to the hoist with suitable sling gear. Fig. 33: Attaching the disc lever 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 72 Jamming bearing bushings! alignment of the bearing bushings Align bearing bushings so that the end faces (Fig. 34/2) face upwards. Insert the bearing bushings into the retaining elements (Fig. 34/1) in the body. Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 73 Fig. 36: Bolting brackets in place Ä Chapter Replacing the body cover gasket Replace the body cover gasket as described in 8.3.1 “Replacing the body cover gasket” on page 61/steps 5– 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 74 Attach the body cover as described in “Replacing the body cover gasket” on page 61/steps 9–15. Ä Chapter 6.3 “Per- Carry out the work for commissioning ( forming the commissioning process” on page 49). Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 75: Replacing The Gland Packing

    Do not remove the fastening nut (Fig. 37/1) from the retaining pin. Undo the adjusting screw (Fig. 37/2) until the spring (Fig. 37/3) tension is released completely. Fig. 37: Detaching the spring 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 76 (Fig. 39/3). Carefully pull the spring off the retaining pin (Fig. 39/4). The spring may get caught on the lever arm. See step 8 for subsequent procedure. Fig. 39: Removing the bolt Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 77 (Fig. 40/3) and lever arm. Fig. 40: Detaching the damper Undo the nut at the end of the valve shaft and remove it together with the washer. Fig. 41: Undoing the lever arm 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 78 Replacing the gland packing Use a packing extractor to remove the gland packing (Fig. 43/3). Completely remove any residue from the gland packing. Carefully clean the emptied packing chamber and the gland contact parts. Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 79 Attaching the lever arm NOTICE! Malfunction due to wrongly attached lever arm! Attach the lever arm (Fig. 44/1) in its original position on the square of the valve shaft (Fig. 44/2). 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 80 (Fig. 46/2) and bolt (Fig. 46/1) to the retaining pin (Fig. 46/4). Make sure that the spring is correctly engaged in the lever arm and retaining pin. Fig. 46: Fastening the spring to the retaining pin Swing check valves 640 AA / 640 AE 20.05.2021...
  • Page 81 (higher preliminary spring tension) Fig. 47: Setting the preliminary spring tension Tighten the retaining pin’s fastening nut (Fig. 48/1). See step 30 for subsequent procedure. Fig. 48: Tensioning the spring 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 82 Use suitable pliers to secure the retaining pin with snap ring. Ä Chapter 6.3 “Per- Carry out the work for commissioning ( forming the commissioning process” on page 49). Fig. 49: Attaching the damper Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 83: Removal, Disposal

    – Wear the following protective equipment: pro- tective gloves, safety footwear, safety goggles, protective work clothing. – Collect any pumped medium that has run out without delay and dispose of it in an environ- mentally responsible manner. 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 84 The heavy weight of the valve, and of its compo- nents, can result in severe injuries. – Transport valves with a suitable hoist or forklift. – Use approved and functional sling gear. – Safeguard valves and components from falling over. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 85: Removal

    Disconnect pipes on inlet side and outlet side from the valve. Remove any supports, if necessary. Use a suitable hoist to remove the valve from the pipe and set it down so that it is secured against falling over. 20.05.2021 Swing check valves 640 AA / 640 AE...

  • Page 86: Disposal

    – If in doubt, contact the local authorities or spe- cialist disposal companies for information regarding the environmentally compatible dis- posal. Swing check valves 640 AA / 640 AE 20.05.2021...

  • Page 87: Index

    Instruction ......20 Intended use ......11 20.05.2021 Swing check valves 640 AA / 640 AE...
  • Page 88 Tools ........7 Transporting the pallet ....35 Swing check valves 640 AA / 640 AE 20.05.2021...

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640 ae

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