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 6620-01-535-0070
NSN 5999-01-326-3416
NSN 6145-01-179-9547
NSN 5985-01-160-9461
NSN 6110-01-478-4857
NSN 5999-00-217-1870
NSN 6105-01-107-4077
NSN 5998-01-485-7752
NSN 6320-00-701-0437
NSN 5855-00-256-5562
NSN 6240-00-449-6003
NSN 5935-01-509-1518