providing the mechanical reliability required for maintaining system static pressure and overall thermal efficiency in large-scale furnace and AC configurations

Enhanced Durability: Engineered to withstand high-pressure environments

Technicians should look for yellow-tipped flames

Rely on these dielectric flange accessories to preserve the electrical break required in professional HVACR and plumbing installs

Professional-grade motor control requires components that handle thermal and electrical stress without failure

Resideo VU843A1020 Actuator 318172-701 providing the mechanical reliability requiredThe Resideo VU843A1020 is a heavy duty fan coil actuator engineered for commercial hydronic systems requiring reliable two position control. Operating on 24 Vac, this spring return actuator is designed for seamless integration with VU52, VU53, and VU54 series valve bodies. Featuring an SPST controller connection, the unit provides a full 22 degree stroke with a 15 second motorized timing and a rapid 4 second spring return for precise flow management.