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 5998-00-134-8408
NSN 5935-00-165-8540
NSN 7035-00-455-7666
NSN 5910-01-409-2852
NSN 5998-01-362-8171
NSN 5930-00-113-3719
NSN 5945-01-219-3708
NSN 6685-00-641-3699
NSN 2925-01-457-5649
NSN 5990-01-426-7350
NSN 6240-00-509-2485
NSN 6240-01-384-3887