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.
NSN 5835-01-115-6067
NSN 6135-01-629-0198
NSN 6685-01-228-1689
NSN 5965-01-360-6568
NSN 5999-01-192-5495
NSN 6610-01-272-8625
NSN 6685-00-558-0856
NSN 6240-01-172-5981
NSN 6130-01-368-5462
NSN 5925-01-397-6450
NSN 5998-00-870-6723
NSN 6645-01-323-1956