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 6145-01-571-0921
NSN 5950-00-159-9795
NSN 7035-00-166-0339
NSN 6610-00-346-4309
NSN 6150-01-179-1868
NSN 5930-01-012-1354
NSN 6145-01-523-6156
NSN 5990-00-306-0222
NSN 4140-01-198-9990
NSN 6685-01-444-1496
NSN 5905-00-566-5160
NSN 6240-00-722-9558