Water Heater Safety
When water is heated, it expands due to thermal expansion.
Water, unlike air, cannot be compressed. Therefore, when water is heated, its volume increases, and it must go somewhere. This occurrence in a water heater poses significant issues. To keep your tank and family safe, you’ll need a thermal expansion tank.
P.R.V.s are installed at the home’s water supply pipe and serve as one-way valves, blocking flow back into the municipal water supply pipe. A “closed system” is the outcome of this non-return barrier. Because of the closed system, heated water has nowhere to go as it expands, producing thermal expansion within your home’s water system.
Thermal expansion has the potential to generate tremendous pressure than the water heater can handle. If unsafe pressure remains uncontrolled, it will cause costly leaks and damages that extend beyond the water heater to the pipes, fittings, fixtures, and worse, if a pipe or the water heater breaks. Every tank has a pressure release valve, but it is not a thermal expansion device. It can also become inefficient if it becomes clogged by mineral deposits due to continual dripping water.
Water increases in volume by up to 4% when heated, depending on the beginning and final temperatures. If there is no demand for hot water at the taps, the extra water has nowhere to go. Because water is incompressible, the enlarged water cannot be accommodated and will operate as a hydraulic ram, increasing pressure to potentially hazardous levels.
Water heater makers are aware of the risk. They caution customers that if a heater is placed in a residence with a closed system and no provision for thermal expansion control (a safety tank), dangerous pressure situations may arise, endangering life and property. All homes with a pressure-reducing valve must now include a thermal expansion tank, according to plumbing standards.
A skilled plumber installs a thermal expansion tank on the water heater’s supply pipe. Water does not enter the tank under normal pressures since it is pre-pressurized. As the water expands due to thermal expansion, it is pushed into the expansion tank and released when the pressure equalizes. We are the best choice for water heater repair in Kansas City, MO, due to our adherence to safety standards.