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 6685-01-535-9332
NSN 5999-00-734-1105
NSN 5999-00-025-9012
NSN 6150-01-075-1603
NSN 7035-01-603-4408
NSN 7035-01-570-8934
NSN 7035-01-146-1578
NSN 5935-01-089-9981
NSN 5998-01-377-5002
NSN 5965-00-035-4556
NSN 6240-01-090-1666
NSN 2925-01-076-5219