Does such a relief valve exist? 1

[ShaggyPE]

I am searching for a relief valve for an argon and/or helium laboratory aparatus. We have an expensive piece of equipment in the circuit that we do not want to over pressurize. The pressure that we have determined to be the maximum is .03 psig. Have any of you guys used a relief valve (preferably a pop safety) or rupture disk in this low range.

I appreciate any info
Thanks,

Dustin Biber
Optivus Technology Inc.

 

[pennpoint]

Shaggy18VW
I'd like to re-submit my suggestion for precision relief valves made by the following.

http://www.halkey-roberts.com

http://www.agmcontainer.com

These people I am sure can help you.

Regards
pennpoint

 

[PSVEngineer]

With such a low working pressure defined, why not use a simple spring-plunger piston with seal (very much like the commercial PSVs you have in mind?) A simple sealing seat, a piston of sufficient area that you don't get into a bind looking for a spring with a tremendously low rate, and an overall cage (i.e.: valve-case). You didn't mention, but is this application cryogenics? Is extremely low temperatures a material consideration? What is the state of Argon/Helium you are working in?


Engineering Point #1: Amateurs built the Ark, Professionals built the Titanic - unknown

PSVEngineer