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 Springs is a village in Cayuga County, New York, United States. The population was at 1,074 people at the 2000 census. The name is derived from the mineral springs near the village. The Village of Union Springs is in western part of the Town of Springport and is southwest of Auburn, New York. The village is south of the former Cayuga tribe village of Gwau-gwah (Cayuga Castle), which became a Jesuit Mission. The native village was a target of the Sullivan Expedition of 1779.