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 5965-01-005-0341
NSN 5990-00-005-5215
NSN 6645-00-359-5463
NSN 6220-01-422-8179
NSN 5930-01-549-2256
NSN 6150-01-591-8023
NSN 6620-01-401-5356
NSN 6145-01-596-0490
NSN 2925-01-106-3552
NSN 6105-01-399-5431
NSN 5920-00-231-8950
NSN 5945-01-407-1602