Which expansion vessels belong to the Zilmet product line to be installed in heating systems subjected to INAIL testing?

The Zilmet expansion vessels that must be installed in heating systems subjected to INAIL testing belong to the CAL-PRO CE Italia product line or to the ULTRA-PRO CE Italia product line: the expansion vessels belonging to these product lines are supplied together with a specific declaration of conformity drawn up as required by INAIL regulations. This declaration of conformity is supplied together with the expansion tank and must be kept to be shown to the bodies responsible for testing and checking the systems.

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