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 6610-01-463-8866
NSN 6145-01-302-9522
NSN 5965-00-583-4865
NSN 5965-01-222-2613
NSN 6220-01-575-7741
NSN 5855-01-013-6864
NSN 6320-01-086-2602
NSN 6645-00-171-9639
NSN 5855-00-832-9341
NSN 6145-01-518-3411
NSN 7035-01-522-5597
NSN 6620-01-152-0936