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 6135-00-134-6648
NSN 6220-00-577-3435
NSN 5990-01-116-2181
NSN 5975-01-342-2292
NSN 5998-00-961-8637
NSN 4140-01-246-3090
NSN 5910-00-861-7848
NSN 6610-01-141-7014
NSN 5950-01-046-4412
NSN 5965-00-665-2156
NSN 5905-00-148-4811
NSN 6145-01-411-1210