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 5950-01-377-7622
NSN 4140-01-644-7085
NSN 5996-01-652-9693
NSN 5920-01-550-9545
NSN 6135-01-566-1034
NSN 5990-01-633-9503
NSN 5835-01-228-0178
NSN 5998-01-324-5985
NSN 6130-00-951-2942
NSN 5998-01-512-6684
NSN 2925-01-144-7106
NSN 6220-01-214-0270