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 5925-01-475-1832
NSN 6145-01-113-1363
NSN 6240-00-117-9957
NSN 5950-01-616-9588
NSN 5960-01-578-5537
NSN 5990-01-153-0679
NSN 6240-01-200-7937
NSN 6685-01-464-4272
NSN 5855-00-160-2286
NSN 7035-01-337-1729
NSN 5855-01-387-5224
NSN 7035-00-946-2642