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 6110-01-400-4207
NSN 2925-00-087-2465
NSN 5965-01-029-5222
NSN 5905-01-345-7879
NSN 6650-01-146-5000
NSN 6320-01-084-8821
NSN 6645-01-135-5449
NSN 5999-01-461-3249
NSN 6220-01-045-6265
NSN 5910-01-519-2308
NSN 5855-01-020-7982
NSN 5930-00-647-4267