Coded Relief Valves?
Coded Relief Valves?
(OP)
Questions about relief valves and compressors:
If I consider a multistage high pressure recip compressor I think I understand coded relief valves. The interstage pulsation bottles and heat exchangers are pressure vessels. Coded pressure vessels need coded relief valves.
Things get murky when I consider a lube pump on that same compressor. The lube pumps I have seen are positive displacement, so there are one or more relief valves (internal/external) to protect against downstream blockage.
Are these types of relief valves typically coded? Should they be coded?
If I consider a multistage high pressure recip compressor I think I understand coded relief valves. The interstage pulsation bottles and heat exchangers are pressure vessels. Coded pressure vessels need coded relief valves.
Things get murky when I consider a lube pump on that same compressor. The lube pumps I have seen are positive displacement, so there are one or more relief valves (internal/external) to protect against downstream blockage.
Are these types of relief valves typically coded? Should they be coded?





RE: Coded Relief Valves?
David
RE: Coded Relief Valves?
Thanks for the feedback. I suspected as much, but wanted to get another viewpoint.
We have a group that looks at pressure vessels. They holler when they see relief valves without code stamps, regardless of the application (you might have guessed-we have some big recips with lube pumps).
It would be nice to get some "relief" from these folks. Maybe I can suggest cost savings.