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 5915-01-168-1176
NSN 6130-00-458-2696
NSN 5835-01-274-1035
NSN 5999-00-162-8932
NSN 5998-01-609-3125
NSN 6135-01-476-4697
NSN 6130-00-084-1880
NSN 5910-00-388-6737
NSN 6130-01-384-0315
NSN 7035-01-327-0793
NSN 5905-00-246-4639
NSN 6320-00-343-1798