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 6135-01-415-1163
NSN 7035-01-412-3692
NSN 5960-00-652-5921
NSN 5935-00-719-7523
NSN 5965-01-255-8691
NSN 5965-01-356-4401
NSN 2925-01-144-7106
NSN 6685-01-539-9248
NSN 6620-01-062-4307
NSN 4140-01-400-3610
NSN 2925-01-541-5031
NSN 5990-00-099-0822