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 5925-01-134-5124
NSN 5985-01-112-8057
NSN 6650-01-545-5672
NSN 5975-01-199-4502
NSN 7035-00-225-6499
NSN 5985-00-172-3806
NSN 6610-00-161-0680
NSN 6685-00-274-5533
NSN 6685-01-024-2674
NSN 5910-01-027-2706
NSN 5835-01-466-5496
NSN 5915-00-998-1350