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 5905-01-029-3698
NSN 6650-01-324-6458
NSN 6620-00-466-2314
NSN 6685-01-052-4076
NSN 5920-01-040-3383
NSN 4140-01-449-7606
NSN 5998-00-654-5278
NSN 5985-00-368-4530
NSN 5915-00-005-0313
NSN 6240-01-430-9739
NSN 6240-00-372-4841
NSN 6130-01-616-0517