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 2925-01-556-0333
NSN 5905-01-302-3267
NSN 6240-01-176-0223
NSN 5945-01-369-6515
NSN 5905-01-394-2845
NSN 6220-00-819-7028
NSN 5960-01-226-0342
NSN 5935-01-379-6256
NSN 6645-01-297-5639
NSN 6320-01-442-3428
NSN 6110-01-509-9887
NSN 6105-01-441-0048