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 7035-00-631-3782
NSN 5920-00-946-9147
NSN 6110-01-361-8044
NSN 5950-00-999-7619
NSN 5999-00-123-9950
NSN 5935-00-854-4484
NSN 6220-00-595-6954
NSN 5930-00-595-8943
NSN 5996-01-122-8288
NSN 5915-01-084-8696
NSN 5950-01-456-8729
NSN 6685-00-446-2692