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 6645-00-242-0480
NSN 6130-00-769-9624
NSN 5895-01-634-0630
NSN 5935-01-645-5236
NSN 5950-01-463-7780
NSN 7035-01-550-2461
NSN 6105-01-245-8932
NSN 5915-00-922-4868
NSN 6135-01-589-0333
NSN 6685-01-463-2970
NSN 5835-00-918-8169
NSN 5905-01-518-2631