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Does hydrostatically testing an aluminum-lined composite cylinder with tap water corrode the cylinder or make the cylinder unsafe?

No. Tap water of varying quality from all around the world has been used to hydrostatically test and retest aluminum and aluminum-lined composite cylinders for more than 30 years without harming cylinders or making them unsafe to use-provided, of course, that the cylinders have been properly dried after testing, as required by regulation.









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