Maxiflame LK 556 G1 antifreeze safety valve – for heat pumpsMaxiflame LK 556 G1 antifreeze safety valve for heat pumps The LK 556 AntiFreeze is a safety valve designed to protect heating systems from the risk of frost, particularly those with air water heat pumps or external circuits. The valve automatically intervenes when the fluid temperature drops below +3C , draining water from the system to prevent damage to pipes and components. Operation is completely automatic and maintenance free , and does not
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