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 6620-01-414-4578
NSN 2925-00-247-1242
NSN 5990-01-400-3299
NSN 6645-01-594-1439
NSN 6610-00-239-2374
NSN 5925-01-371-5282
NSN 5998-01-013-8925
NSN 6220-00-578-6539
NSN 5990-00-013-6862
NSN 5855-01-201-4857
NSN 5985-00-757-0550
NSN 5965-00-823-8623