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 6620-01-128-3053
NSN 6135-01-462-6040
NSN 5960-01-456-1735
NSN 5915-01-055-9248
NSN 6685-00-233-6563
NSN 5920-01-519-4763
NSN 6645-01-252-8870
NSN 5930-00-770-2542
NSN 6145-00-956-3455
NSN 6110-01-425-1449
NSN 6110-01-287-9607
NSN 5920-01-422-3730