avoid mounting the actuator below the horizontal plane to prevent moisture from entering the housing

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This genuine Mitsubishi replacement part is essential when a system experiences erratic signaling or power surges that compromise the existing printed circuit board (PCB)

This manual-handle valve is built to survive the rigors of field service

technicians should use anti-static protection and verify all terminal connections are secure and free of oxidation before powering the system

Caleffi ZVR104 Relay 319852-301 avoid mounting the actuator belowThe Caleffi ZVR104 is a professional grade 4 zone valve relay designed for precise control of hydronic heating systems. Serving as a direct HPZC104 replacement, this multi zone controller manages up to four zone valves and features priority zoning functionality, allowing a single zone to be designated for domestic hot water (DHW) production. Engineered with a multi pin selectable priority option, the ZVR104 ensures that space heating loads are