Packed lever vs Open Lever
Packed lever vs Open Lever
(OP)
I have a relief valve in nitrogen service (line provides a N2 pad to a tank).
what is the difference between a Packed Lever and a Open Lever relief valve? Would that make any difference in my service?
Thanks in advance!
what is the difference between a Packed Lever and a Open Lever relief valve? Would that make any difference in my service?
Thanks in advance!





RE: Packed lever vs Open Lever
There can be a noticeable difference commercially between the 2.
ASME VIII "UV/NB" Code Stamped SRV's require a lever as a mandatory requirement when the fluid is air, steam or water above 140F (Unless specific rules are followed and accepted).
Per ISO, only the term Safety Valve is used regardless of application or design.