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 5925-00-034-1293
NSN 5905-00-372-5203
NSN 5975-01-413-4708
NSN 4140-01-480-4319
NSN 7035-01-280-4692
NSN 5975-01-324-1110
NSN 5985-00-524-9656
NSN 6105-00-845-5621
NSN 5985-01-617-0396
NSN 5935-00-224-8368
NSN 6220-00-218-0857
NSN 6610-00-430-5208