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 5935-00-060-0066
NSN 6135-01-462-6040
NSN 5998-01-624-4226
NSN 6110-01-427-0161
NSN 5930-01-066-0290
NSN 6135-01-204-8712
NSN 6685-01-122-4456
NSN 5920-00-919-6050
NSN 5910-00-816-0542
NSN 5950-01-135-6818
NSN 5998-00-814-8394
NSN 5930-00-150-1173