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 5975-01-509-5428
NSN 5975-01-604-7046
NSN 2925-01-575-7376
NSN 5925-01-168-7812
NSN 6105-01-322-8944
NSN 7035-00-585-2113
NSN 6610-00-945-3112
NSN 5930-01-149-6864
NSN 6220-01-333-7978
NSN 5960-00-234-5961
NSN 5895-01-615-3219
NSN 5985-01-403-2835