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Attempting to bore out the hub will ruin the balance of the assembly
115V cast iron circulator pump is specifically engineered for high-efficiency performance and quiet operation
Always use a calibrated gauge downstream to verify the setpoint during commissioning
Optimized Performance: Specifically engineered to match the 1075 RPM torque profile required for residential blower and fan applications
Marvair S/07846 Controller 321142-301 Attempting to bore out theThe Marvair S 07846 CommStat 4 Controller is a high precision, factory new OEM HVAC control module designed to manage mission critical cooling environments, including telecom shelters and industrial equipment rooms. As the primary lead lag controller for dual unit Marvair systems, this board optimizes runtime across multiple compressors while providing crucial fail safe redundancy. The S 07846 serves as the official direct replacement for Marvair S