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 6620-00-675-0641
NSN 5930-01-634-0659
NSN 6610-00-061-7882
NSN 5835-00-946-2656
NSN 6240-01-163-2813
NSN 6220-00-682-8292
NSN 6240-01-089-6149
NSN 6645-01-231-2432
NSN 2925-01-106-3552
NSN 5895-00-026-1749
NSN 6110-01-122-5928
NSN 5975-01-629-4706