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 5950-01-261-2940
NSN 6145-00-868-0714
NSN 2925-01-459-8093
NSN 5999-01-221-3599
NSN 5930-01-603-6012
NSN 5990-01-161-4625
NSN 5965-00-170-5254
NSN 5920-01-027-0660
NSN 5945-01-360-7446
NSN 5930-01-198-1585
NSN 6220-01-302-4448
NSN 2925-00-912-3993