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 5935-00-190-7034
NSN 4140-00-142-2491
NSN 5975-00-102-7425
NSN 5965-00-060-0090
NSN 5920-01-475-4892
NSN 6145-01-623-8267
NSN 5930-01-424-1095
NSN 5920-01-048-7462
NSN 5998-01-367-5670
NSN 6685-00-532-9266
NSN 6620-01-100-2530
NSN 5910-01-045-9236