Crown Engineering H24-34 Spiralink Coupler 340793-762 such as the T-400 series

such as the T-400 series thermostats and H-100 series humidistats

Always verify the specific voltage and signal type (modulating vs

including the FTX850

What is the best way to handle the silicon carbide element during installation

Crown Engineering H24-34 Spiralink Coupler 340793-762 such as the T-400 seriesThe Crown Engineering H24 34 Spiralink Coupler is a heavy duty single spring replacement designed to eliminate the common failure points of multi spring OEM components in hydronic circulators. This 5 8" x 5 8" clockwise (CW) pump coupler features a unique spiral torsion design that provides 3 dimensional flexibility, allowing the system to absorb high start up torque and compensate for minor shaft misalignment without the risk of shearing. Engineered