A heat pump has a reversing valve, two metering devices and two bypass valves. This allows the unit to provide both A/C and Heat. The diagram above shows a HP (heat pump) in cool mode. The cycle goes like this; 1  The compressor (1) pumps the refrigerant to the reversing valve (2).
Union Gap, Washington. Union Gap redirects here. For the music group, see Gary Puckett & The Union Gap. Union Gap is a city in Yakima County, Washington, United States. As of the 2010 census, the city population was 6,047. Union Gap has a storied history and in recent years has become the retail hub for the entire Yakima Valley as a result of Valley Mall and other thriving businesses being located here.
Union County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 15,007. Its county seat is Morganfield. The county was formed on January 15, 1811. Located at the mouth of the Wabash River, Union County, along with neighboring Posey County, Indiana, and Gallatin County, Illinois form the tri-point of the Illinois-Indiana-Kentucky Tri-State Area.