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 5990-00-244-8684
NSN 4140-01-644-4637
NSN 6610-01-181-4398
NSN 6110-01-066-8038
NSN 6130-01-215-4423
NSN 6685-00-787-8594
NSN 6620-01-266-5545
NSN 5935-01-191-7311
NSN 6645-01-530-3654
NSN 5835-00-665-3395
NSN 6685-01-647-3756
NSN 6105-00-199-8808