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 5990-01-463-0953
NSN 6650-01-047-9642
NSN 6135-01-567-0739
NSN 6150-01-477-4344
NSN 5935-00-332-4796
NSN 4140-01-382-3864
NSN 6645-01-380-5360
NSN 7035-00-494-4575
NSN 6610-00-229-6742
NSN 5895-01-415-3732
NSN 5915-00-857-3007
NSN 5960-01-418-2641