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 6220-00-199-9401
NSN 5950-00-393-1553
NSN 5935-01-213-2153
NSN 7035-01-222-1484
NSN 5965-00-215-5866
NSN 5990-01-531-0487
NSN 6135-00-998-5884
NSN 6645-01-192-8717
NSN 5855-00-885-8452
NSN 5855-00-138-2386
NSN 5998-01-141-0613
NSN 5990-01-056-6413