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  • Users: Wintechcad
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  1. Wintechcad

    Valve wall thickness

    Hi, Does anybody know of a definitive standard or method for calculating the thickness of a WOG rated ball valve? I have purchased ASME B16.34 which seems to only give class ratings and associated thicknesses, but it does not cover WOG. I have a 1000 WOG valve with ANSI 150 flanged ends and...
  2. Wintechcad

    Ball valve stem sizing

    Hi, Does anyone know of a calculation or 'rule of thumb' process for determining the breakaway torque of a ball valve? I am designing a class 1500 ball valve from scratch and am using ASME B16.34 2009 for body bolts, wall thickness and general design, but there seems to be nothing on stem...
  3. Wintechcad

    Ball valve body joints

    Hi, I am new to this forum - not so new to engineering though. Are UNF threads acceptable for bolted body joints on ball valves per ASME B16.34? I note that some other standards state that coarse threads be used, but sometimes when running calculations per para 6.4.2 (a), just going to fine...

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