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 5930-00-186-0712
NSN 6645-01-356-1179
NSN 5925-01-512-6053
NSN 6105-01-315-0715
NSN 5945-01-385-6103
NSN 5998-01-058-0707
NSN 6110-01-367-6526
NSN 5835-01-100-3265
NSN 5990-00-053-1892
NSN 5999-01-559-0619
NSN 6135-01-407-0594
NSN 5895-01-377-4496