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 5965-01-422-3232
NSN 6135-01-222-0703
NSN 6220-01-585-0025
NSN 5950-00-206-3213
NSN 5998-00-326-5953
NSN 6130-01-077-8953
NSN 5998-01-203-6794
NSN 2925-00-526-4541
NSN 5950-01-318-6339
NSN 6645-00-435-5610
NSN 5920-00-387-5312
NSN 5998-00-679-4001