Siemens Building Technology 277-03169 Valve Assembly mario both model numbers refer to

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

or "rolling" flames during the burner cycle

Smith 100208063 heavy duty filter

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

Siemens Building Technology 277-03169 Valve Assembly mario both model numbers refer toThe 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