• FAN COIL WITH THREE-WAY TEMPERATURE CONTROL VALVES The typical three-way temperature control valve directs flow of water either through the heat transfer coil or to the by-pass pipe. Using a FlowCon Flow Control limits the amount of water to each coil so there is accurate balancing and proper transfer of heat in each zone. This also allows the pump to operate at the current point on its design curve thus conserving energy and extending equipment life.