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 6650-01-115-7981
NSN 5895-01-501-2735
NSN 5895-00-007-3360
NSN 6130-00-925-2303
NSN 5945-00-816-9717
NSN 5915-00-278-5561
NSN 5999-00-308-7682
NSN 5925-00-834-0272
NSN 6685-01-654-1395
NSN 5945-01-658-1738
NSN 5945-00-004-2765
NSN 5960-00-275-7497