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 6320-01-554-0901
NSN 6645-01-532-5785
NSN 6650-01-081-0069
NSN 6685-01-496-9994
NSN 6320-01-006-6138
NSN 5910-01-334-3634
NSN 6320-00-115-0883
NSN 6610-00-973-2453
NSN 5835-00-427-2772
NSN 5960-01-020-6316
NSN 5950-01-480-2033
NSN 6650-00-518-5194