Generally used in radiant heating systems, this plastic device screws onto the return side of the manifold when you want to heat multiple zones. It has to be wired to a zone control and acts as a zone valve, allowing you to use one manifold to control the temperature in different rooms independently.
The actuator has been rated for a maximum pressure of 200 PSI and a maximum temperature of 200⁰ F and carries a 5 year warranty.
