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 6135-01-562-6582
NSN 6685-01-116-3195
NSN 6130-00-719-7219
NSN 5985-01-224-8504
NSN 7035-01-471-0475
NSN 6110-01-422-0873
NSN 5905-01-310-6824
NSN 6620-01-650-5226
NSN 5895-00-395-0292
NSN 4140-01-329-4836
NSN 5998-01-411-9744
NSN 5985-01-137-2084