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 6620-00-456-0404
NSN 5950-00-945-1045
NSN 6220-00-088-0580
NSN 6685-00-817-5694
NSN 4140-00-521-0380
NSN 5999-00-360-6520
NSN 6130-00-273-1111
NSN 6220-00-314-9680
NSN 6610-00-883-5160
NSN 6610-00-066-9353
NSN 6145-00-923-8127
NSN 5925-01-090-9631