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 6240-00-915-1705
NSN 5950-01-512-2096
NSN 5975-01-200-4252
NSN 4140-01-478-0567
NSN 5965-00-170-5254
NSN 6135-01-623-2970
NSN 6645-01-462-3754
NSN 5905-01-277-9577
NSN 6685-01-363-2427
NSN 6620-01-048-4145
NSN 6645-00-171-9639
NSN 5905-01-406-2368