Caleffi's 163 and 164 Series radiant HYDROMIXERS™ regulate the system's fluid temperature and are specially designed for direct mounting to a HYDROLINK™ 559 Series hydraulic separator/manifold. The 163 Series thermostatic radiant HYDROMIXER provides a fixed temperature constant flow to maintain a low temperature radiant panel. The 164 Series motorized radiant HYDROMIXER incorporates a modulating three-point floating actuator to regulate the fluid temperature in HVAC systems in response to a separately sourced outdoor reset controller.

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