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 7035-01-323-0164
NSN 6135-01-132-6310
NSN 6145-01-012-9912
NSN 6150-01-117-2351
NSN 6685-01-526-3457
NSN 6110-01-583-0363
NSN 6135-00-753-2276
NSN 6620-01-566-3456
NSN 6220-00-940-9752
NSN 6685-00-828-6565
NSN 5960-01-128-7784
NSN 5835-00-665-3395