[Jewelry making - Article 00252] - Re: [Orchid] An interesting idea for soldering

[Dan]

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>     My main difficulty at  this point is in building a pressure relief
>     valve for it. I've got a  prototype valve built but, without a way
>     to verify pressure, I have no  way to calibrate the valve to safe
>     levels.

    How about using nitrogen or CO2 with a regulator to deliver pressure
    and test the operation of the relief valve. Every restaurant with a
    fountain dispenser uses a co2 regulator to control the pressure and
    should be easy to find a regulator inexpensively. 

Dan Wellman

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