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 6220-01-339-7557
NSN 6650-01-467-7454
NSN 7035-01-432-9034
NSN 5930-00-498-1882
NSN 6150-01-657-6001
NSN 6110-00-931-6721
NSN 5999-01-358-0211
NSN 6645-00-816-5337
NSN 6150-00-471-3212
NSN 6320-00-925-0558
NSN 6220-01-627-5380
NSN 5915-01-394-5150