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 6130-01-551-1468
NSN 6145-00-798-4831
NSN 6645-00-155-2398
NSN 5905-01-310-6824
NSN 6620-01-259-5944
NSN 6685-00-248-6990
NSN 2925-01-141-7563
NSN 6320-01-176-8367
NSN 5950-01-131-6665
NSN 6220-01-340-3699
NSN 6650-01-369-8733
NSN 6135-00-715-4001