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 6645-00-166-6959
NSN 6135-01-142-2417
NSN 5915-01-558-3923
NSN 6150-01-386-5011
NSN 6220-01-410-8592
NSN 5905-01-146-4352
NSN 7035-01-040-6373
NSN 5950-00-821-7345
NSN 5965-00-834-6298
NSN 7035-01-305-1950
NSN 6320-01-521-1764
NSN 5998-01-567-2328