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 5975-00-925-1197
NSN 6650-01-395-5991
NSN 2925-01-316-0725
NSN 6110-01-020-9495
NSN 5998-00-657-4760
NSN 6150-01-043-4521
NSN 6645-00-948-9763
NSN 6135-01-231-0444
NSN 5945-01-228-7420
NSN 6240-01-633-9357
NSN 6150-00-845-5883
NSN 6320-01-268-3072