Siemens Building Technology 277-03169 Valve Assembly mario Configurable Timing: Field-selectable defrost timer

Configurable Timing: Field-selectable defrost timer intervals allow for customization based on local climate and frost accumulation rates

For proper installation and to avoid performance issues

This model is specifically designed to be used with 2 1/2" or 3" flanges

Durable Construction: Engineered to withstand the high-vibration environment of an active blower or compressor compartment

both model numbers refer to the same 11-square-inch proportional actuator with standard stroke and spring ranges

Siemens Building Technology 277-03169 Valve Assembly mario Configurable Timing: Field-selectable defrost timerThe 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