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 5925-00-573-4367
NSN 5930-00-117-3821
NSN 5915-01-419-9071
NSN 5999-00-626-3538
NSN 6105-00-035-8809
NSN 5999-00-404-8982
NSN 6320-01-466-4175
NSN 5990-00-707-0731
NSN 6650-01-143-1116
NSN 6620-01-136-5492
NSN 6130-00-153-3136
NSN 6240-01-567-1648