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 5905-01-112-8359
NSN 6645-01-208-5090
NSN 6610-00-358-1905
NSN 5975-00-832-0563
NSN 4140-01-441-9170
NSN 5920-01-602-3351
NSN 6220-00-255-5652
NSN 5920-00-510-7656
NSN 5835-01-386-0110
NSN 2925-01-180-2960
NSN 5990-01-128-7599
NSN 6320-01-492-1976