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 6145-00-950-4922
NSN 5930-00-148-9247
NSN 5905-01-219-7646
NSN 5999-01-527-0845
NSN 4140-00-394-5744
NSN 5905-01-344-0609
NSN 5835-01-108-4980
NSN 6240-00-767-2389
NSN 5920-00-132-6440
NSN 6150-01-267-3725
NSN 5990-01-089-9694
NSN 5905-01-052-3233