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 5950-00-278-1201
NSN 6145-00-294-0830
NSN 5905-01-379-7609
NSN 4140-01-400-3610
NSN 5998-00-850-2363
NSN 2925-01-265-2853
NSN 7035-01-528-5527
NSN 5998-00-111-4498
NSN 5965-00-164-8092
NSN 5930-00-534-8911
NSN 5905-01-554-2679
NSN 6130-00-266-1051