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 5835-01-117-6124
NSN 4140-01-184-7417
NSN 5996-00-071-0042
NSN 6150-00-828-7136
NSN 5950-01-622-4318
NSN 7035-00-631-3782
NSN 6610-00-928-7642
NSN 5915-00-082-1286
NSN 5905-00-563-2771
NSN 5975-01-282-8828
NSN 6220-01-056-5169
NSN 6650-01-138-8174