B31.1 Threaded joint limitation - hydrotest truck connection

[crazyjpeters]

I understand there’s limitations on threaded joints in B31.1. Makes sense. When doing pressure testing (hydrotest) beyond the pressure limit of said piping size, what’s the method for connecting temporary hydro testing equipment? We have used a hammer union welded into the piping system, but our current contractor wants a threaded pipe. At 2800psi, we’re way past the limits on 1 inch pipe.

 

[LittleInch]

Design that bit to asme b 31.3??

No pressure limitation in that code.

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