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 6320-00-358-1946
NSN 6240-01-218-5187
NSN 6105-00-221-0809
NSN 6610-01-538-4660
NSN 6110-01-046-0120
NSN 5895-01-337-4597
NSN 6240-01-573-3316
NSN 5950-00-155-9986
NSN 6145-00-126-1606
NSN 5990-00-136-8030
NSN 6135-00-271-0407
NSN 5920-01-070-6603