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 6135-00-819-8074
NSN 5945-00-104-8579
NSN 5895-01-141-3920
NSN 6650-01-628-8920
NSN 2925-01-150-7160
NSN 5930-00-919-0782
NSN 6685-00-553-8733
NSN 6620-00-203-9466
NSN 6130-01-158-6139
NSN 5990-01-065-0492
NSN 5925-01-509-0571
NSN 6135-00-932-3136