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 5925-01-659-9710
NSN 6220-01-311-2531
NSN 5990-01-468-1292
NSN 6110-01-519-2636
NSN 5960-01-293-1571
NSN 5835-01-261-2978
NSN 5905-01-621-8483
NSN 6150-00-318-8209
NSN 5905-00-153-2802
NSN 6685-01-536-8184
NSN 6150-00-375-8786
NSN 5960-01-283-2281