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 5999-01-633-7701
NSN 5910-01-520-9071
NSN 6220-01-537-8629
NSN 7035-01-224-5165
NSN 5965-00-581-9978
NSN 5996-01-354-9386
NSN 5965-00-812-9158
NSN 5975-01-336-4353
NSN 5910-00-009-6169
NSN 6130-01-090-6999
NSN 4140-01-202-8670
NSN 6130-00-132-3267