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 4140-00-551-3151
NSN 6240-00-925-0841
NSN 6650-01-350-2515
NSN 6135-01-341-9814
NSN 5999-00-857-0226
NSN 5950-01-461-7010
NSN 5905-01-231-7874
NSN 6130-01-138-1107
NSN 5835-01-390-4667
NSN 6105-01-607-4306
NSN 5945-00-137-1194
NSN 6685-01-627-1237