Water Pressure Regulators
Home water pressure regulators reduce the water pressure from the utility’s distribution system to a lower pressure for household plumbing and fixtures, and they protect against pressure surges.
Plumbing codes typically require pressure regulators with strainers whenever the static water pressure from the utility exceeds 80 psi. On new installations, the pressure regulator is usually installed downstream of the water meter (the house side), near the house.
A pressure regulator uses a spring-loaded valve. Adjusting the screw on top of the valve increases or decreases the pressure on the spring and increases or decreases the pressure downstream of the valve. Most homeowners set their pressure at approximately 50 pounds per square inch (psi), but it is a matter of owner preference. Lower settings will help conserve water and extend the life of plumbing fixtures.
NB: A faulty pressure regulator may be the cause of low water pressure, especially if it hasn't been serviced or replaced in some time. But there are other plumbing-related reasons that should be investigated, and these are detailed on the Low Pressure FAQ page.
Pressure Regulators FAQ
Who is responsible for installing and maintaining a pressure regulator?
Customers are responsible for repairing and maintaining their private plumbing system located downstream of the utility’s water meter. As such, the property owner is responsible for installing and maintaining a pressure regulator.
What is the static water pressure at my property?
The static water pressure is the pressure available to your service address from the utility’s distribution system when there is no water flowing. Please note that flow results in head loss that reduces pressure. A rough estimate of your static water pressure can be provided by contacting Customer Care.
Do pressure regulator’s wear out and fail?
Yes, pressure regulators have moving parts that are subject to wear, fatigue, and seizure. This can cause undesirable low or high pressure.
How do I know if the pressure regulator is working?
Symptoms of a malfunctioning regulator might include abnormally high or low pressures, and clanging or rattling pipes. The only sure way to test a regulator's operation is with the installation of pressure gauges, which is something best left to a qualified plumber. In such cases, simple replacement may be recommended.
Can I adjust and repair my pressure regulator?
Yes. A homeowner or plumber can accomplish this by consulting the pressure regulator manufacturer’s instructions. The adjustment mechanism is usually a screw on top of the regulator. Generally, turning the screw clockwise increases water pressure, and counter-clockwise reduces pressure. Repair kits for rebuilding regulators are usually available from the manufacturer. The assistance of a licensed plumber for pressure regulator installation and maintenance is recommended.