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 6220-01-110-9708
NSN 6620-01-265-8629
NSN 5920-01-050-7474
NSN 5975-00-678-5958
NSN 6130-00-155-5873
NSN 5915-01-417-4205
NSN 5990-01-571-7468
NSN 5990-01-575-3275
NSN 6105-01-023-1611
NSN 5905-01-371-1341
NSN 6105-00-026-9909
NSN 5950-00-995-0099