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 5905-01-103-2541
NSN 5835-01-035-2976
NSN 6105-01-305-3675
NSN 5950-01-444-4588
NSN 5960-01-413-3877
NSN 5925-00-414-1433
NSN 5999-00-542-0541
NSN 5999-01-656-6960
NSN 5910-00-351-0321
NSN 5975-01-603-4993
NSN 6145-01-197-1619
NSN 5945-01-649-3349