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 6650-01-214-9728
NSN 5975-00-782-2045
NSN 5915-01-146-5543
NSN 6320-01-147-9177
NSN 6610-01-361-8965
NSN 5935-01-428-7767
NSN 5930-01-150-1443
NSN 5925-00-539-8372
NSN 6620-01-487-2509
NSN 4140-01-106-4456
NSN 6685-00-287-7564
NSN 5895-00-147-4101