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 5920-01-551-2775
NSN 6685-01-642-8909
NSN 5905-01-292-8773
NSN 5965-01-619-5396
NSN 6320-01-006-6138
NSN 5999-00-832-4899
NSN 5920-01-038-1122
NSN 2925-01-359-4027
NSN 5945-01-253-0357
NSN 6105-01-580-0264
NSN 5930-00-871-0650
NSN 5975-00-279-3972