![]() ![]() Temperature-Pressure Relief ValveĪll hot water heaters must be protected with a relief valve, also called a temperature-pressure relief valve (TPR or TP Valve). If they take this approach, they should also correct the situation by also moving the dip tube to the outlet. PRO TIP: Plumbers might reverse the inlet and outlet pipes only for the sake of convenience. Someone who takes a shower is going to be met by a blast of cold water. Then cold water enters right into the top of the tank because it isn’t going through a dip tube. Sometimes, you’ll find that the inlet and outlet pipes are reversed. Hot water leaves the tank from the outlet at the top. That keeps the cold water from cooling down the hot water. The inlet on the top of the tank sends cold water to the bottom of the tank through a dip tube. Notice the shut-off valve on top of the cold water supply inlet pipe. All gas, oil, and electric water heaters have the following components in common: How does a hot water heater work? If you want to know all the basics, then all you really need to know are the parts of a water heater. It is wrapped on the outside with insulation and an enamel metal jacket. In addition, its tank is usually lined with steel on the inside with glass, porcelain, or cement. Where Should You Place Your Hot Water Heater?Ī water heater is a tank that stores, heats, and delivers hot water wherever you need it.How Long Before a Water Heater Recovers. ![]()
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