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 6145-00-170-6467
NSN 6145-01-647-1383
NSN 6610-00-267-9944
NSN 6620-01-462-1625
NSN 5920-01-433-2261
NSN 5996-01-642-0409
NSN 6150-01-584-1463
NSN 5960-01-632-6576
NSN 5910-01-155-5515
NSN 6150-00-901-7264
NSN 6645-00-417-9356
NSN 5920-01-025-1618