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

For proper installation and to avoid performance issues

Smith 100208063 heavy duty filter

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

ensuring the electrical footprints and mounting holes align perfectly with the unit's vestibule panel

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