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.
McClellan now knew that Lee had divided his army, sending part of it to capture Harpers Ferry, leaving only a few regiments to guard the South Mountain Gaps. This set the stage for the campaignâs turning point: the Battle of South Mountain. Fought on September 14th, the Battle of South Mountain took place on three gaps.The northern gaps (Turnerâs and Foxâs) are clustered around the National Pike (present-day Alternate U.S. 40).otal casualties for the Battle of South Mountain were about 6,100 killed, wounded, and missing. For many of these men the South Mountain is their last battlefield. The battlefield serves as a shrine to the memory of those who fought and died here in 1862.