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 5965-00-339-2743
NSN 5975-00-477-4479
NSN 6130-01-203-5704
NSN 6620-01-616-3303
NSN 5905-01-272-5896
NSN 6620-00-610-1272
NSN 6130-01-258-1134
NSN 5915-01-484-9097
NSN 6150-01-188-7317
NSN 5998-01-239-4716
NSN 5895-00-081-2219
NSN 6645-01-085-8879