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 6220-01-117-0322
NSN 6685-01-182-6945
NSN 5996-00-055-0549
NSN 5965-01-618-8346
NSN 4140-00-925-4149
NSN 6610-01-618-7038
NSN 6645-01-149-4082
NSN 5996-01-564-5886
NSN 5920-01-188-5289
NSN 5855-01-483-1350
NSN 6130-01-465-6313
NSN 6145-00-947-5883