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 5950-01-169-2143
NSN 5960-01-474-4843
NSN 6320-00-139-1090
NSN 5950-00-760-5332
NSN 5960-00-118-2903
NSN 6110-01-250-5054
NSN 6135-01-008-4595
NSN 5905-00-331-4276
NSN 5915-01-444-5873
NSN 7035-01-383-6549
NSN 6610-00-949-1289
NSN 5925-01-160-7609