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 5930-01-335-6903
NSN 5960-01-143-1202
NSN 5999-01-110-1286
NSN 4140-01-508-6550
NSN 5925-00-986-7314
NSN 5965-01-221-0550
NSN 5910-01-133-5586
NSN 5998-01-401-5396
NSN 5965-00-529-0602
NSN 6645-00-899-1235
NSN 6145-01-634-0388
NSN 6645-01-128-6932