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 5935-00-992-7659
NSN 5920-00-135-4930
NSN 5998-00-934-9626
NSN 5990-01-018-1994
NSN 5910-01-559-9149
NSN 5985-01-515-1566
NSN 5905-00-915-7631
NSN 6650-01-030-0238
NSN 6150-00-251-7608
NSN 6240-00-299-9819
NSN 6135-01-242-6484
NSN 6685-01-258-1238