Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Pressure Rating Standards for Non-Ferrous Valves

Status
Not open for further replies.

jpyeck

Mechanical
Oct 18, 2004
12
US
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?
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top