Which way to turn the water pressure regulator screw?
On most pressure regulators, after loosening the lock-nut around the adjusting screw, turning the screw in will increase the water pressure. Don’t overdo-it. Just a turn or two should make a difference. Keep track of the number of turns so that you can go back to where you started if necessary. Sometimes the municipal water supply may itself be temporarily shut down or running at reduced flow. Check with your local water department or neighbors. Increasing the building water pressure by adjusting the pressure regulator (or a pump pressure control switch) will not fix a poor water delivery rate from the source (municipal water main or local private water pump), but if the pressure was set too low to start with you may see an improvement by this adjustment. If your loss of water pressure or flow was sudden, it’s not likely to be a problem with the pressure regulator except in the less common cases of a blockage or failure in the regulator itself.
