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 5920-01-003-8110
NSN 5950-01-293-6562
NSN 6150-01-328-8220
NSN 6685-00-679-9965
NSN 6610-00-682-6215
NSN 6610-01-185-4939
NSN 5965-01-316-4429
NSN 5905-01-085-5745
NSN 5925-00-685-9703
NSN 6150-01-462-0193
NSN 5960-01-014-3876
NSN 6130-01-411-9914