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 4140-00-420-0251
NSN 5895-01-392-1054
NSN 6645-00-183-8812
NSN 6650-01-437-8852
NSN 6620-01-386-5543
NSN 6650-01-631-3027
NSN 6645-01-571-1234
NSN 6610-01-592-4150
NSN 5905-01-087-7000
NSN 5950-00-228-0818
NSN 6135-00-968-8594
NSN 6220-00-878-1327