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 5998-00-093-1999
NSN 4140-00-469-2606
NSN 5915-01-533-3229
NSN 5999-00-206-0444
NSN 5998-00-757-5064
NSN 5999-00-584-4577
NSN 5998-00-153-9989
NSN 5998-01-145-8942
NSN 6220-01-116-2411
NSN 6610-00-613-5420
NSN 4140-01-059-2095
NSN 5999-00-400-4194