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 2925-00-196-9003
NSN 5996-01-421-0411
NSN 5910-00-085-4703
NSN 6610-01-385-1771
NSN 4140-00-170-1567
NSN 5975-01-379-3278
NSN 5855-01-003-0848
NSN 5945-01-088-6526
NSN 6220-00-242-0456
NSN 5975-00-060-8063
NSN 5935-01-212-2820
NSN 6240-00-275-1950