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 5855-00-151-3853
NSN 6145-01-212-3528
NSN 4140-00-927-7992
NSN 6135-01-613-1155
NSN 6645-00-256-4072
NSN 5915-01-417-2058
NSN 6105-00-339-8366
NSN 6620-01-589-5411
NSN 5925-01-144-5459
NSN 2925-01-424-0235
NSN 6320-01-473-9024
NSN 6685-00-809-4297