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 5930-01-237-9980
NSN 5965-01-103-0398
NSN 5910-01-194-4237
NSN 5925-00-951-9232
NSN 5920-00-445-3585
NSN 5965-01-584-9038
NSN 5930-00-932-4928
NSN 5920-00-269-6178
NSN 5998-01-020-0124
NSN 7035-00-756-4374
NSN 7035-00-620-6835
NSN 6320-01-006-6138