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 5935-01-388-5584
NSN 4140-00-905-6570
NSN 6220-01-415-4854
NSN 5910-01-178-2548
NSN 5905-01-017-8117
NSN 6645-00-979-6824
NSN 6645-01-354-5589
NSN 5835-01-485-0210
NSN 5975-01-535-8764
NSN 6610-01-367-5110
NSN 6650-00-941-2585
NSN 2925-01-567-8027