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 5920-01-167-9026
NSN 5915-00-862-5347
NSN 5920-01-386-3188
NSN 6610-01-157-0426
NSN 5920-01-342-5883
NSN 5855-01-308-0955
NSN 6610-01-363-9745
NSN 6135-00-962-4111
NSN 7035-01-364-8454
NSN 6105-01-245-8932
NSN 5985-00-270-4509
NSN 5965-01-388-5296