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.
Lake Union is the namesake of the neighborhoods located on its east and west shores: Eastlake and Westlake, respectively.The northern shore of the lake is home to Gas Works Park.ake Union's westernmost point can be considered the Fremont Cut, which is located just east of the Aurora Bridge and is spanned by the Fremont Bridge.