How to Change a Water Pressure Regulator Valve in a House
High water pressure in your home can cause a variety of plumbing problems. Damage to appliances, fixtures and pipes can occur if water pressure is consistently higher than normal, or if it occasionally spikes. Using a water pressure regulator valve on your incoming water supply line will help even out and limit the incoming water pressure, helping to protect your plumbing and appliances. Over time, pressure regulator valves can wear out and fail, requiring replacement. Replacing a water pressure regulator valve is easy, and can be done in a matter of minutes.
Place a bucket under the existing water pressure regulator valve.
Turn off the main water supply to the house.
Drain any water remaining in the lines by opening a tap or valve that is located below the regulator valve, if possible.
Hold the body of the water pressure regulator valve with an adjustable pipe wrench.
Place an adjustable wrench on one of the connecting nuts at the end of the water regulator. Turn the nut counterclockwise until it is free from the water regulator. Repeat this process on the connecting nut at the other end of the water regulator. Remove the water pressure regulator.
Wrap two complete turns of Teflon tape clockwise around the threads on the new water pressure regulator valve. Hold the valve between the connecting nuts that were connected to the old valve. Ensure that the arrow on the new valve is pointing in the direction of water flow.
Thread the connecting nuts onto both ends of the water regulator valve and turn them clockwise until they are hand tight. Hold the body of the water regulator valve with an adjustable pipe wrench. Use an adjustable pipe wrench to turn the connecting nuts clockwise one full turn.
Turn on the water supply and adjust the pressure according to the manufacturer's specifications. Check all connections for leaks. Turn the connecting nuts one quarter turn clockwise at a time until any leaks stop.
Remove the collet clip from both ends of the pressure regulator valve. Slide the collet on one end of the valve toward the body of the valve and pull the pipe free from the collet. Repeat this process with the pipe and collet on the other end of the valve. Remove the water regulator valve.
Hold the valve between the pipe ends with the arrow on the body of the valve pointed in the direction of water flow. Slide the end of one pipe into the collet and push it in firmly. Repeat this on the other end of the valve. Slide the collet clips into the collets.
Turn on the water supply and adjust the pressure according to the manufacturer's specifications. Check all connections for leaks. Remove the pipes from the collets, clean them with emery cloth and reinsert them into the collets if you detect any leaks.
Things You Will Need
- Pipe wrenches
- Teflon tape
- Regular maintenance and adjustment will prolong the service life of your water pressure regulator valve.
- Incorrect water pressure settings can lead to burst pipes and damaged appliances.