[PSUBS-MAILIST] Ambient pressure sub hardware

["Pierre Poulin" <pipo305@hotmail.com>]

Hi everybody!

I'm working on an ambient pressure sub and I would like to know if any of 
you know what kind of pressure valve, relive valve, or whatever I need to 
automaticaly adjust the pressure inside the sub to water pressure + 5 psi?

The only automatic valve that I know of is the kind that regulate any input 
psi to a fixed output psi. But that doesn't help since the valve need to 
adjust constantly and in both ways (plus or minus).

Thank you very much for your help!

Pierre Poulin

pipo305@hotmail.com



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