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 5975-01-079-7927
NSN 6240-01-432-7926
NSN 6620-00-172-9222
NSN 6135-01-156-4627
NSN 5996-01-371-2958
NSN 6320-00-731-6134
NSN 6130-01-267-9570
NSN 6105-01-406-4844
NSN 6650-01-155-5217
NSN 6620-01-554-2924
NSN 5835-01-119-8561
NSN 6145-01-606-3750