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 5935-01-470-3985
NSN 4140-01-285-4418
NSN 6320-01-373-7171
NSN 6145-01-091-8026
NSN 5855-00-281-3843
NSN 5950-01-138-1395
NSN 5999-01-527-4660
NSN 5996-01-015-7604
NSN 6620-01-241-9592
NSN 7035-01-189-7367
NSN 5950-01-606-8782
NSN 2925-01-271-8727