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 5915-00-621-0425
NSN 5950-00-543-7906
NSN 6145-00-968-6603
NSN 6240-01-252-8850
NSN 5855-01-512-1926
NSN 5965-01-486-3564
NSN 5998-01-430-3484
NSN 6620-00-312-2036
NSN 5935-01-498-8518
NSN 5998-00-214-0251
NSN 5975-01-027-9132
NSN 5920-01-145-8616