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 5998-00-013-1377
NSN 5910-00-880-8119
NSN 6130-01-044-8088
NSN 5985-00-584-2205
NSN 6645-01-083-4759
NSN 6610-00-575-7933
NSN 5998-01-601-5872
NSN 5855-01-604-4161
NSN 5905-00-669-8284
NSN 5835-01-459-8664
NSN 5945-00-814-0303
NSN 6135-01-528-6896