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 5999-01-559-1258
NSN 6220-01-492-9144
NSN 5905-00-592-8084
NSN 5930-01-652-5312
NSN 5935-00-425-4383
NSN 6135-01-142-2417
NSN 5920-01-660-6972
NSN 5910-01-043-5265
NSN 5990-01-499-6930
NSN 6620-01-145-7762
NSN 5920-01-360-5681
NSN 6150-01-557-3263