suitable for indoor or panel-protected environments

Unlike standard fixed orifices

ensuring precise airflow management and seamless communication with the system control board

Robust Construction: Resists thermal stresses and oxidation common in gas-fired copper-tube boilers and water heaters

preventing issues with under-firing or hazardous carbon monoxide production

Siemens Building Technology 277-03169 Valve Assembly 323080-701 suitable for indoor or panel-protectedThe Siemens Building Technology 277 03169 Valve Assembly is a heavy duty 2 way normally open globe valve designed for precision flow control in demanding hydronic and steam applications. Built with a rugged bronze body and brass trim, this 1 1 2 inch NPT assembly provides a high flow capacity with a 25 Cv rating and an equal percentage flow characteristic for stable modulation. The unit is powered by a high torque 8 inch pneumatic actuator featuring