Step 3 · Adjust the Pressure
With the locknut loosened, you can now adjust the pressure. To decrease the water pressure (our goal), use a wrench or screwdriver to turn the adjustment bolt counter-clockwise ('lefty-loosey'). To increase pressure, you would turn it clockwise ('righty-tighty'). Make only a small adjustment at first—a quarter-turn or half-turn is sufficient. It is crucial not to make large adjustments at once, as this can cause a dramatic and unpredictable change in pressure.