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 6110-00-505-1671
NSN 5930-00-518-4605
NSN 5945-01-492-9460
NSN 5930-01-475-9779
NSN 5925-01-584-5331
NSN 6320-01-585-8468
NSN 6130-01-293-6051
NSN 6110-01-035-5735
NSN 6650-00-283-0978
NSN 5915-01-293-2365
NSN 6620-00-912-9623
NSN 5996-01-483-1858