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The VTA320/520 valve is the first choice for domestic hot water supply where scalding safety is required and where other temperature control devices are installed at the taps. These valves can also be used in the presence of a circulation pipe. They are also suitable for underfloor heating systems, but special attention must be paid to the temperature range and flow requirements. Function:asymmetrical flow direction,scalding safe (hot water shuts off immediately in case of cold water failure)Media:fresh water/drinking waterclosed systemswater with antifreeze additive (glycol ≤ 50% mixture)
