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 5905-00-279-7859
NSN 6610-00-005-4452
NSN 5905-01-531-5917
NSN 2925-01-317-4543
NSN 5990-01-339-5118
NSN 4140-00-472-4615
NSN 6685-00-412-5864
NSN 6150-00-724-4947
NSN 6320-01-527-0211
NSN 6240-01-428-9410
NSN 6110-00-367-2427
NSN 5999-00-247-5438