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 5999-01-023-4516
NSN 5945-01-237-2592
NSN 5925-01-148-4866
NSN 5930-01-426-1607
NSN 5910-01-055-5620
NSN 5985-01-326-8959
NSN 6620-00-193-9503
NSN 5945-01-536-0072
NSN 4140-01-071-0161
NSN 2925-01-446-6523
NSN 5930-00-398-1517
NSN 6220-01-593-5940