Hugh, Forgot that I did up those sketches. Brent, thanks for digging those out. You can purchase the Bimba actuating cylinders in stainless steel with an option for spring loaded so that the valve will fail in the closed position (i.e. loss of control air pressure). R/Jay Resepectfully, Jay K. Jeffries Andros Is., Bahamas Save the whales, collect the whole set. From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Hugh Fulton Brent, You are a classic. Yes that is the one I was thinking of. Very simple. I might try and use it. Thanks Hugh |