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 5905-01-157-9540
NSN 5925-01-600-4916
NSN 6650-01-650-1405
NSN 5996-01-190-5160
NSN 6240-01-096-4572
NSN 5835-01-319-4636
NSN 5925-01-365-0436
NSN 5975-00-827-5835
NSN 5930-01-336-3289
NSN 5915-01-227-5746
NSN 6320-00-937-5625
NSN 4140-01-275-9516