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 5895-01-277-0035
NSN 6650-01-535-9190
NSN 6645-00-126-0286
NSN 6105-00-192-0151
NSN 6685-00-678-0567
NSN 5835-00-233-6327
NSN 6650-01-549-5838
NSN 5990-01-442-3520
NSN 6240-01-036-9040
NSN 5950-00-092-0511
NSN 6130-01-562-4839
NSN 6135-01-373-2518