Williams P323078 Thermo Switch 321894-708 Integrating this zone valve stem

Integrating this zone valve stem assembly ensures your 1-1/4 inch hydronic lines maintain optimal flow characteristics and responsive temperature regulation across all zones

This water gauge set is rated for a maximum operating pressure of 500 PSI at 450F

The actuator will automatically travel the full length of the valve stroke to learn the end-stop positions and scale the input signal accordingly

How do I adjust the setpoint during a service call

featuring a keyed plug for error-free wiring

Williams P323078 Thermo Switch 321894-708 Integrating this zone valve stemWhen you're out in the field servicing a customer's HVAC unit, reliability is non negotiable. The Williams P323078 Thermo Switch is a critical OEM replacement component designed specifically for Williams wall furnaces and direct vent heating systems. This high integrity furnace limit switch acts as a safety or operational control, sensing temperature fluctuations to manage blower activity or provide essential circuit protection. Whether you are