CENTRA LINE Motorized butterfly valves offer two-position and modulating control for chilled, hot or cooling tower water systems. Honeywell carries pipe sizes from 2 to 24v in two-way and 2 to 18-in. three-way applications.Also, it can provide feedback output signal: Dry contact for On-Off version; 1~5V, 0(2)~10V, 4~20mA (selected by DIP- switch) for modulating version, Auxiliary Switch is optional.