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.
Joomla gallery by joomlashine.com. BullsGap Header Showlist new. Bulls Gap is Nestled in the Mountains of East Tennessee. In 1792 John Bull, a gunsmith from Pennsylvania, received a North Carolina land grant for 55 acres of land on Bays Mountain. He operated a trading post and stage line through the natural passageway which became known as Bulls Gap.