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 6320-01-550-3420
NSN 6220-01-327-0554
NSN 5960-00-034-7925
NSN 6620-01-330-3917
NSN 6145-01-513-1323
NSN 5855-01-222-1242
NSN 7035-00-225-6499
NSN 4140-01-412-0403
NSN 5915-00-865-0724
NSN 6135-01-430-3119
NSN 6130-01-044-8088
NSN 6320-01-116-3980