DEFROST RELAY

Is this switch compatible with non-condensing units

high-quality replacement for older

it is best practice to install the valve vertically with the timer facing upward or horizontally

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

Lochinvar & A.O. Smith 100208660 Flow Switch 320735-701 DEFROST RELAYThe 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.