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 6145-01-095-4139
NSN 6685-01-279-6300
NSN 6150-01-170-1109
NSN 6645-01-400-2119
NSN 6220-01-575-2216
NSN 6220-01-412-1487
NSN 5945-00-901-8427
NSN 5920-01-500-8005
NSN 5950-01-382-4947
NSN 6685-01-113-8005
NSN 7035-01-473-7582
NSN 5998-01-468-8381