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 5895-00-265-0159
NSN 6320-01-372-8671
NSN 6130-01-420-1772
NSN 6240-01-055-0801
NSN 6240-00-248-6517
NSN 6685-01-035-5337
NSN 6220-00-113-8617
NSN 6130-00-559-9606
NSN 5985-01-205-2685
NSN 2925-01-379-6183
NSN 6135-01-185-1057
NSN 5905-01-176-1616