Plumbing 0.0 / 5 ? EngineeringCold WaterBTEC NationalNone Created by: JonW8Created on: 03-01-23 17:02 Air gap Air-filled space, which allows contaminated water to discharge freely without coming back into the water supply. 1 of 6 Air lock A blockage in liquid flow. 2 of 6 Alkalinity The measure of elements in water, which determine its alkaline conditions. 3 of 6 Anti-siphon Prevents backflow of water into a system. 4 of 6 Aquifer Zone below the earth’s surface that is capable of yielding a significant volume of water – its upper level is called the water table. 5 of 6 Back pressure Pressure that resists the flow of fluid in a piping system. 6 of 6
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