Caleffi valves zone motorized npt Caleffi actuator valves motorized 24vac 120vac 230vac Caleffi z-one
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Caleffi actuator 24v normally closed aux switch wire Caleffi z-one Caleffi z121000 z-one 24v normally closed valve actuator without aux
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Z111000 - Caleffi Z111000 - 24V Normally Closed Actuator w/ aux. switch
Caleffi Z-one - 24VAC Actuator for Motorized Zone Valves