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 5950-01-519-2069
NSN 5999-01-571-5910
NSN 6650-01-051-2021
NSN 7035-01-256-9598
NSN 5915-01-178-2598
NSN 5950-01-500-6533
NSN 5855-00-337-3679
NSN 6135-01-354-5535
NSN 5835-01-213-0833
NSN 6135-01-394-8087
NSN 5999-01-413-8621
NSN 6645-00-851-6654