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 6620-00-102-7442
NSN 6650-00-499-7446
NSN 4140-01-591-4012
NSN 5950-00-849-1096
NSN 6240-00-137-2498
NSN 5895-01-185-1988
NSN 5945-00-155-4290
NSN 6135-00-269-5843
NSN 5998-01-395-2739
NSN 6145-00-397-3069
NSN 6135-01-056-4609
NSN 6645-00-019-0554