Throat and neck: 50

Take the DN 100 exit.

This is a spring-loaded safety valve, and the applicable medium is gas.

What shape is your flange? Is it concave?

The flange standard of general safety valve is GB/T9 1 19.

But you said American standard.

The technical standards for design, manufacture and acceptance of American standard safety valves meet the requirements of GB/T1224142/43-2005 and foreign standards such as API, ANSI, ASME B 16.34.

Manufacturing standard:

I design standard: ASME B 16.34

Second, the connection standard:

1. socket welding software: according to ASME b16.11.

2. NPT of threaded end: according to ASME B 1.20. 1.

3. BW of butt welding end: according to ASME B16.25; ; GB/T 12224

4. RF of flange end: according to ASME B16.5; ; JB79GB HG, etc.