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 5990-01-134-7756
NSN 6240-01-369-6464
NSN 7035-01-506-4367
NSN 5855-01-534-7940
NSN 5905-01-254-0841
NSN 5975-00-990-7024
NSN 6610-00-225-7680
NSN 5910-01-225-9928
NSN 5935-00-282-7967
NSN 5925-00-290-4451
NSN 5835-00-740-0246
NSN 6145-01-254-4080