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 6650-01-145-5173
NSN 5998-01-461-2450
NSN 5945-01-141-3209
NSN 6145-00-185-9962
NSN 4140-00-305-1023
NSN 6685-01-077-3414
NSN 6645-01-221-3704
NSN 6645-00-795-5565
NSN 7035-01-158-7673
NSN 5945-01-149-7382
NSN 6620-01-358-7531
NSN 2925-01-411-8002