Resideo ZD22X12TZ Damper 320788-704 Automatic Reset: Resets at 505

Automatic Reset: Resets at 505 PSI

2-inch ASME water relief valve designed specifically for large-scale hot water heating boiler systems

This hot surface ignitor features a specialized ceramic body and element material optimized for the specific voltage curves of Source 1 control boards

As a direct S1-331-09171-000 replacement

for higher velocities

Resideo ZD22X12TZ Damper 320788-704 Automatic Reset: Resets at 505The Resideo ZD22X12TZ Damper is a professional grade 22" Wide X 12" High Parallel Blade Zone Damper engineered for high static pressure applications. Built with a heavy duty extruded aluminum frame and blades, this 24Vac zone damper features a Power Closed Spring Return Open configuration, making it the ideal choice for systems requiring a fail safe open position. The integrated synchronous motor is side mounted on the 12 inch dimension, providing