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 6620-01-521-0580
NSN 6130-01-122-8908
NSN 2925-01-461-4347
NSN 5905-00-267-9551
NSN 5920-01-605-2457
NSN 6685-00-966-5561
NSN 6220-01-590-4150
NSN 6610-01-542-8825
NSN 5855-00-156-5489
NSN 5935-01-497-9984
NSN 5965-00-801-1131
NSN 6650-00-552-8377