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 5990-01-424-2954
NSN 6130-00-691-1602
NSN 5895-00-753-5349
NSN 5965-01-274-7933
NSN 5975-01-139-4128
NSN 5990-01-419-0661
NSN 5990-01-400-3299
NSN 6645-00-498-6869
NSN 6650-00-116-7439
NSN 6105-01-495-1492
NSN 6220-00-915-0862
NSN 4140-01-101-1165