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  1. bigbirdflew

    316H stainless steel fitting to P91 pipe weld

    does anyone have experience welding 316H SS fittings to P91 pipe/valves? and doesn't mind sharing the steps/process and precautions?? thanks
  2. bigbirdflew

    shutoff valve closure and motor operator size

    have a question about the closure test in B16.34 and how it relates to the motor operator on a shutoff valve. Process design conditons are (steam) approx. 20 psig and 275 degF. valve supplier quoted a class 150# valve with a very larger motor operator; stating that to meet the closure test in...

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