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 5895-00-694-2081
NSN 6130-01-267-5067
NSN 5935-01-307-7511
NSN 5895-01-498-3726
NSN 6105-01-421-4457
NSN 5950-01-222-6004
NSN 6650-01-422-3395
NSN 5965-01-522-4632
NSN 6240-01-455-4520
NSN 6650-00-399-6269
NSN 6610-01-567-3026
NSN 5960-00-892-0990