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 6320-01-512-2031
NSN 5945-00-889-1494
NSN 6685-00-097-4126
NSN 4140-01-024-1332
NSN 5920-01-314-6341
NSN 5996-01-515-6895
NSN 2925-01-014-8007
NSN 5999-00-999-4435
NSN 5905-01-599-9460
NSN 5990-01-459-5482
NSN 5895-01-275-3551
NSN 5990-01-361-6424