August 14, 2009
Water Pressure is created naturally and artificially. Naturally, water pressure is the force exerted under its own weight. With pumps, water pressure can be created artificially.
There are many factors that can affect water pressure either positively or negatively. Increased water pressure usually occurs when a pump from the municipal water source has been upgraded due to increased demand. Often, in growing communities, additional water towers are built which will result in increased pressure.
How high is too high?
Most current plumbing codes specify 80 psi as the maximum pressure at which your potable water system may safely operate. AAA AUGER Service Technicians are trained to provide water pressure tests to every home free of charge. Excessive water pressure can cause many problems to include ruptures in both supply lines and faucet packings (seals, o-rings, etc.) and the bursting of hot water tanks.
How is excessive water pressure addressed?
Whenever pressures are discovered to be over 80 psi, a Pressure Reducing Valve (P.R.V.) or similar mechanical regulator should be installed. The regulator will ensure that, beyond the point of installation, the water pressure will never exceed the safe limit.
Note: A Pressure Reducing Valve may negatively affect the performance of an irrigation system. Installing the regulator beyond the irrigation system’s tie into the water supply will prevent such problems. Also, when installing a P.R.V., the system becomes a “closed” system. Please see the Thermal Expansion section for more information.