[PSUBS-MAILIST] second stage adjusting

[Alan James via Personal_Submersibles]

Rick,I resin printed a second stage regulator bodywith an adjustment bolt & spring to give up to 10psi overpressure. It has a diagphram rated for 80psi that was built for me in China & a standard 2nd stage mechanism for regulating air.It has an outlet fitting to an 8 port manifold.On the manifold I have an over- pressure valve for pressure relief in the system.I am building an electric manipulator & using the compensator for that as well as the thrusters.Hanks method of using an additional 1st stage should work. I believe Karl Stanley is or was using this method. He said he let the over- pressure bubble out through the thruster o-rings.Not sure what type of 1st stage Hank is using.Possibly the more sensitive diaphragm type.You could run a line from the first stage to a manifold and put a beer brewing type over- pressure valve in the manifold. Not sure how long the spring in the manifold will last though. I think they are 304 stainless.Cheers.

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