Check valves for oxygen system

[idcool]

I am working on an oxygen system providing 51 Bar (gauge)through a pipe of 76mm (roughly 3 inches).Can anyone recommend a type of check valve for this system?


Mostly I have found lift check valves of this size, I have found other designs as well which are less common from

http://flomatic.com/index.asp?lg=1&w=pages&r=4&pid=101

Also it has to be made from stainless steel.

Any suggestions? Thank you

 

[unclesyd]

You might want to give the people at Hy-Grade a call.

http://www.hy-grade.com/index.html

 

[gerhardl]

You should specify when ordering 'fat free for oxygen' and use a type closing with spring to obtain 'soft closing' (closed when pressure is equalized on both sides to avoid slamming and pressure peaks)

below valves might be interesting

http://www.gestra.com/products/a2/rk29-e.pdf

 

[gustorf]

Noreva does stainless steel nozzle check valves for oxygen service.

http://www.noreva.de