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 6685-01-627-8403
NSN 6240-00-550-6911
NSN 6130-00-435-1116
NSN 5925-00-563-3707
NSN 6650-01-264-9076
NSN 6130-01-621-9497
NSN 7035-00-286-6221
NSN 6620-00-233-6839
NSN 6220-01-364-9608
NSN 5920-01-309-9216
NSN 6110-01-633-8045
NSN 5996-00-159-1056