Kelso JS75 Installation, Operation, Inspection And Maintenance Manual Download Page 1

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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

Summary of Contents for JS75

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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