Resideo ZD12X18TZ Damper 320720-756 this 3/4-inch sweat connection zone

this 3/4-inch sweat connection zone valve is designed to integrate seamlessly into fan coil units

or diagnostic codes signaling a relay stuck in the open or closed position

as measured by a manometer at the control valve pressure tap

Designed for 208-230V applications

the E22C34301 serves as the direct replacement for the legacy E12C34301 model

Resideo ZD12X18TZ Damper 320720-756 this 3/4-inch sweat connection zoneThe Resideo ZD12X18TZ Damper is a professional grade 12" x 18" zone damper engineered for high performance airflow management in multi zone residential and light commercial HVAC systems. This parallel blade zone damper features a heavy duty extruded aluminum frame and rigid aluminum blades, ensuring structural integrity and a low leakage seal (less than 1% at 0. 5 in. WC) that maximizes system efficiency. Designed as a power closed spring return open