Shop our selection of Expansion Tank, Water Heater Parts in the Plumbing Department at The Home Depot..WATTS WATER TECHNOLOGIES GIDDS Watts Potable Water Expansion Tank, Plt , Stainless Steel, . Gallon, Lead Free .Increasingly, solar powered water heaters are being used. Their solar collectors are installed outside dwellings, typi.y on the roof or walls or nearby, and the potable water storage tank is typi.y a pre existing or new conventional water heater, or a water heater specifi.y designed for solar thermal..Warning Gas Powered Tanks and Insulation Blankets. Installing a water heater blanket on a gas powered storage tank is a more challenging procedure than wrapping up an electric powered tank..
The items which should be installed in sequence in the cold water line are the EXPANSION TANK must be installed at least inches away from the cold water inlet fitting on the water heater, the PRESSURE GAUGE, and the PRESSURE REDUCING VALVE, if required, see Figure ..