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 5915-01-287-4409
NSN 5895-00-081-2219
NSN 6650-01-146-5000
NSN 6220-01-175-7360
NSN 6320-01-551-3553
NSN 6135-01-045-1504
NSN 6110-01-287-9607
NSN 6650-01-343-1708
NSN 7035-00-763-6180
NSN 5925-01-305-5198
NSN 6645-01-576-9896
NSN 6320-00-004-9158