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 6620-01-360-4725
NSN 5965-00-422-5415
NSN 2925-00-642-8854
NSN 6320-01-399-6177
NSN 5998-01-132-6151
NSN 7035-00-529-3128
NSN 6105-01-515-9858
NSN 5905-01-651-7616
NSN 6105-01-448-0936
NSN 6685-01-091-8928
NSN 4140-01-623-9449
NSN 6620-01-266-8894