Three-way valves in HVAC
Three- way valves in H V AC 1 . What are three - way valves and how do they work in H V AC systems ? Three - way valves are used in H V AC systems to control the flow of chilled water . The valve has three ports : one for the in let , one for the outlet , and one for the bypass . The valve is opened and closed by a motor , which is controlled by a ther most at . When the ther most at calls for cooling , the motor opens the valve to allow chilled water to flow into the system . When the ther most at calls for heat , the motor closes the valve to stop the flow of chilled water . 2 . The benefits of using three - way valves in H V AC systems . There are several benefits of using three - way valves in H V AC systems , including : 1 . Increased Energy Efficiency : Three - way valves can help increase the overall energy efficiency of a heating or cooling