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 5905-01-069-2726
NSN 6145-01-361-6684
NSN 6685-01-327-3627
NSN 5996-01-597-0977
NSN 6650-00-294-0881
NSN 5905-00-858-0092
NSN 5915-01-658-6472
NSN 5935-00-598-6126
NSN 5855-01-447-3137
NSN 6320-01-103-1655
NSN 5950-01-432-2038
NSN 6610-01-122-0064