I have reviewed several manufacturer's documentation with regards to forged brass ball valves, and have a question regarding the specification of "Body Pressure" or "Working Pressure".
I am used to the hydrostatic testing requirements of ASME B16.34 and ANSI/ISA-75.19.01 which both state a scope pertaining to carbon and stainless steels, nickel-based alloys, and ductile and cast irons. Can forged brass valves or valves made of other materials be tested under these standards? Or are there other standards which directly address materials outside the scope of these 2 standards?
For example, one manufacturer claims "360 psi [Body Pressure] meets or exceeds pressure and rating temperature requirements of ANSI Class 250" for a forged brass ball valve. (For a max. temperature of 240°F)
Some manufacturers state a Working Pressure without reference to where it came from.
Which is correct? Am I missing something?
I am used to the hydrostatic testing requirements of ASME B16.34 and ANSI/ISA-75.19.01 which both state a scope pertaining to carbon and stainless steels, nickel-based alloys, and ductile and cast irons. Can forged brass valves or valves made of other materials be tested under these standards? Or are there other standards which directly address materials outside the scope of these 2 standards?
For example, one manufacturer claims "360 psi [Body Pressure] meets or exceeds pressure and rating temperature requirements of ANSI Class 250" for a forged brass ball valve. (For a max. temperature of 240°F)
Some manufacturers state a Working Pressure without reference to where it came from.
Which is correct? Am I missing something?
