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 5996-00-925-1953
NSN 5990-00-146-3534
NSN 6220-00-149-0977
NSN 5905-00-466-2936
NSN 6130-01-400-6123
NSN 6240-01-436-9868
NSN 5950-01-069-4498
NSN 6610-00-419-3154
NSN 5915-00-988-0014
NSN 6685-01-573-7031
NSN 2925-01-466-0892
NSN 5925-01-320-6844