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 5950-01-367-4321
NSN 5855-01-478-2333
NSN 6650-01-399-8552
NSN 6240-00-078-2360
NSN 5960-00-979-7303
NSN 5998-01-207-9282
NSN 5990-01-074-0055
NSN 5915-01-166-1908
NSN 5925-00-128-2751
NSN 6645-01-642-1300
NSN 5990-01-354-6255
NSN 5950-00-050-1463