Per ansi b.16.18 the max op pressure of 50-50 solder seat connections is 200 psi at 100 degrees f
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
Classification: Check valves of copper having a pressure rating of 850 kpa or over
NSN 5935-01-579-1252
NSN 6610-01-112-0447
NSN 5998-01-522-4275
NSN 5999-01-327-4778
NSN 5990-01-414-7618
NSN 5935-01-182-2349
NSN 6130-01-041-1202
NSN 5930-01-093-2547
NSN 5990-01-414-7618
NSN 5960-00-335-3394
NSN 5930-00-157-4559
NSN 5945-01-579-5405