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 7035-00-463-7143
NSN 5905-01-165-3831
NSN 5965-01-445-1254
NSN 5835-01-631-7390
NSN 5905-01-550-5588
NSN 6220-01-285-5694
NSN 5925-00-009-3005
NSN 6220-01-287-6029
NSN 6685-01-346-2213
NSN 2925-00-814-8745
NSN 5895-01-369-1908
NSN 6650-00-393-0447