Always verify the output type of your control board before installation

avoid using metal bits or reamers that could enlarge the opening

What voltage is this thermostat kit rated for

4 million BTU/hr systems

Does the 7/64" orifice work for all pressures

Johnson Controls VG2231UM Valve THPU32HP7Y Always verify the output typeThe Johnson Controls VG2231UM is a high performance 3 inch 2 way globe valve designed for precise HVAC flow control within commercial building automation systems. Engineered with a rugged cast iron body and durable brass trim, this ANSI Class 125 flanged valve is built to handle hot water, chilled water, and saturated steam applications up to 35 psig. Featuring a modified linear flow characteristic and an 83 Cv rating, the VG2231UM ensures accurate