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Kirby Morgan recalls defective Circle Seal one way valves.
http://www.underwaterindustry.com/news/articles/268/1/Kirby-Morgan-recalls-defective-Circle-Seal-one-way-valves/Page1.html
By  UnderwaterINDUSTRY .com
Published on 07/26/2005
 

KMDSI is issuing a recall on a single batch of defective Circle Seal one way valves. 1) Recall notice for defective Circle Seal one way valves. 2) JPEG photograph of Circle Seal one way valve showing location of date stamp. See attached article.