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 5990-01-443-2931
NSN 6145-01-160-7658
NSN 6645-01-150-9847
NSN 2925-00-620-4438
NSN 6150-01-463-3409
NSN 5965-00-908-1402
NSN 6650-00-187-5388
NSN 5895-01-258-0484
NSN 6320-00-831-2227
NSN 2925-00-233-5644
NSN 5998-00-968-1242
NSN 6610-00-183-0664