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JS PRESSURE RELIEF VALVES
© 2017 Kelso Technologies (USA) Inc. All 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
–
2/7/2022 (Original Release 12/7/2015)
www.kelsotech.com
Printed in U.S.A.
3. Fasten the valve cover onto the valve using the cover bolts with split
lock washers. A thread locking solution should be applied to each of
the cover bolts. Start each bolt by hand, applying the seal number tag
onto one of the cover bolts. Then, tighten the bolts, in a starlike
pattern, and torque them to 100 in.
– lbs.
(Figure 6.16).
7.0 Maintenance
Under normal operating conditions, 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). DOT and AAR have set
forth a retesting interval between tests. The JS Series PVR has been designed to
minimize the valves exposure to any chemicals being shipped by mounting all
components external to the tank. This advantage allows for immediate visual inspection
of most components as well as quick access for emergency respondents.
These instructions only describe maintenance to a valve that has been removed
from the tank car and is located in a suitable environment for retest. Kelso
recommends all maintenance only be performed on valves that have been
removed from the tank car.
NOTE: AAR requires that new seals be installed when a valve is rebuilt. (AAR
M1002 Appendix D
– 3.4)
Figure 6.15
Figure 6.16
