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Installation, Operation,

Inspection and Maintenance

Manual

PRESSURE RELIEF VALVE MODELS:

JS75 & JS75S

JS75XH & JS75XHS

JS75XL & JS75XLS

JS75H & JS75HS

JS75L & JS75LS

JS75LT & JS75LTS

JS165H & JS165HS

JS165L & JS165LS

JS165LT & JS165LTS

Содержание JS75

Страница 1: ...ation Operation Inspection and Maintenance Manual PRESSURE RELIEF VALVE MODELS JS75 JS75S JS75XH JS75XHS JS75XL JS75XLS JS75H JS75HS JS75L JS75LS JS75LT JS75LTS JS165H JS165HS JS165L JS165LS JS165LT J...

Страница 2: ...Kelso Valves are Patent Protected Detailed designs are subject to change without notice Kelso Technologies Inc 1526 Texas Ave Bonham TX 75418 Phone 903 583 9200 Document No KTUD112 Revision 6 2 7 202...

Страница 3: ...o or one of its authorized representatives should be used in the JS Series PRV s The JS Series PRV s may be installed on DOT tank cars that carry hazardous chemicals and may travel under pressure Read...

Страница 4: ...Valves are Patent Protected Detailed designs are subject to change without notice Kelso Technologies Inc 1526 Texas Ave Bonham TX 75418 Phone 903 583 9200 Document No KTUD112 Revision 6 2 7 2022 Origi...

Страница 5: ...k Nut 10 1 10 Dome Cover 11 4 3 8 16 x 1 Hex Head Bolt 12 1 Thrust Washer 13 1 Needle Bearing 14 1 Thrust Washer 15 1 Nameplate Not Shown 16 2 Nameplate Screw Not Shown 17 4 3 8 Split Lock Washer Figu...

Страница 6: ...Valves are Patent Protected Detailed designs are subject to change without notice Kelso Technologies Inc 1526 Texas Ave Bonham TX 75418 Phone 903 583 9200 Document No KTUD112 Revision 6 2 7 2022 Origi...

Страница 7: ...spring laminations can vary replace with like assemblies 1 4 Required Tools Sockets Wrenches 7 16 1 2 9 16 13 16 15 16 1 5 8 1 7 8 Cutting Pliers Lint Free Cloth Ratchet 400 Grit Alum Oxide Emery Clo...

Страница 8: ...he last known test date was within six months the valve can be installed without retesting or requalifying 6 Place a new gasket on the tank mounting flange Kelso Technologies does not supply the flang...

Страница 9: ...ecurement bolts All bolts should have a locking means a split lock washer and Loctite Lift the cover off invert the cover and utilize as a container for the remainder of the valve parts Figure 3 1 2 I...

Страница 10: ...the spring assembly and valve body If the drum bolts are not easily removed place a slotted screwdriver between the spring coil and the spring block then lightly pry the drum away from the spring bloc...

Страница 11: ...ease 12 7 2015 www kelsotech com Printed in U S A 7 The sealing disc can then be lifted and removed from the valve body Figure 3 11 3 12 3 2 JS75 75S JS75H 75HS JS165H 165HS and JS75XH 75XHS Seal Disc...

Страница 12: ...sc Figure 3 14 2 Remove the elastomeric seal carefully with a non abrasive tool Do not damage the seal mating surface 3 3 JS75L LS JS165L LS JS75XL XLS JS75LT LTS and JS165LT LTS Seal Disc Disassembly...

Страница 13: ...zes a compound authentication procedure whereby all seals are etched with the pedigree compound and tracing number If the seal does not have etch refer to the car owner for the proper pedigree compoun...

Страница 14: ...The seat face should also be free from paint dirt rust and scale prior to the application of the elastomeric seal Figure 4 3 4 4 a JS75 S JS75H HS JS165H HS and JS75XH XHS Seal Disc Inspection i Visu...

Страница 15: ...nufacturer car owner or a user with the valve manufacturer s permissions AAR M 1002 Appendix A Paragraph 3 11 4 The adjustment screw should be removed from the spring block in order to examine the thr...

Страница 16: ...e or irregular bend which could be a stress concentration If any of the springs are defective then the complete spring assembly should be replaced When replacing the spring assembly the number of spri...

Страница 17: ...m should be examined for signs of distress The drum edges should not be flared or show signs of cracking The bore through the drums should be round and wear of 1 32 or more will require replacement of...

Страница 18: ...cleaned using the following 1 Wire brushes and or clean towel cloth 2 Low pressure water glass bead sand or soda blasting provided the blast media is not angular in form 3 A chemical surfactant applic...

Страница 19: ...etching install the etched side of the seal so that it is in contact with the sealing disc surface a JS75 S JS75H HS JS165H HS and JS75XH XHS Seal Disc Assembly i Install the Spirolox retaining ring...

Страница 20: ...ording to Figure 5 5 a Insert the thin thrust washer onto the seal disc Figure 5 6 b Insert the needle bearing ring on top of the thin thrust washer c Coat the needle bearing ring with anti seize Figu...

Страница 21: ...surface of the adjustment screw is not obstructed and properly seated against the thrust washer on the sealing disc Figure 5 11 or against the top surface of the sealing disc with the bottom protrusio...

Страница 22: ...clamp or bolt the valve down to facilitate initial positioning of the adjustment screw Figure 5 15 5 16 8 Rotate adjustment screw clockwise by until resistance is first encountered This is the point...

Страница 23: ...uide for the adjustment screw 10 JS75L LS JS165L LS JS75XL XLS JS75LT LTS and JS165LT LTS Spring Block Location Set a Rotate the adjustment screw clockwise until the top of the spring block nut is ali...

Страница 24: ...e appropriate gasket style has been determined and applied to the test stand securely clamp the valve onto the test stand Figure 6 1 and 6 2 Rotate the adjustment screw counterclockwise to lower the s...

Страница 25: ...model covered in this document Depending on the initial STD observed proceed with the following adjustments a If the pressure indicated is below the acceptable AAR tolerance for valve setting rotate t...

Страница 26: ...n achieved and while the test stand is still pressurized slowly start to lower the pressure until the vapor tight pressure has been observed The minimum allowable pressure for this to occur for each v...

Страница 27: ...be torqued according to the following specified values based on the valve model a For valve models JS75 S JS75H HS JS165H HS and JS75XH XHS the jam nut should be torqued to 25 ft lbs b For valve mode...

Страница 28: ...s the JS Series PRV should not require maintenance until a periodic retest is required by code or there are signs of leakage from the valve not leakage between the tank car and valve mounting flanges...

Страница 29: ...tongue must not be exceeded 8 0 Special Guidelines Determining Applicable Pressure Values Refer to AAR publication Regulations for Tank Cars Appendix A applies specifically to valves This section pre...

Страница 30: ...faces should be free from nicks chips and any other damage 11 0 Revision Log Revision 1 Section 7 2 added standard tolerance dimensions Revision 2 Section 4 5 changed spring drum Revision 3 Section 4...

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