valve specs wanted


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Posted by Dan on March 14, 2001 at 20:07:21:

any of you engineering types out there know if it's possible to obtain specs or blueprints of good valve designs. (patent office?) A friend of mine has a good machine shop and he wants to build a 5th valve for a tuba. Axial-flow type valves came to mind, but good rotary designs such the Greenhoe might be feasible as well.

I'm sure some of you guys have already done or thought about this...

any thoughts on attempting such a project?


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