reducing downtime during component sourcing and installation

offering identical pressure ranges and mounting specs with updated internal components for modern HVAC requirements

Is an external vent line required for the R400S series

Adjustments are made via the adjustment screw on the pilot assembly

high-quality replacement for older

Lochinvar & A.O. Smith 100208660 Flow Switch 320735-701 reducing downtime during component sourcingThe Lochinvar & A. O. Smith 100208660 Flow Switch is a critical OEM safety component engineered to monitor fluid velocity within the primary heat exchanger loop. As a veteran grade HVAC replacement part, this liquid flow switch utilizes a high precision #1 paddle assembly to detect consistent water movement, preventing the dry firing of high efficiency boilers. It serves as a direct replacement for WTR2210, WTR2210K, and 100173714 part numbers.