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Step 4 · Adjust the Pressure Screw

With the locknut loose, you can now adjust the pressure. Use a flathead screwdriver to turn the adjustment screw. To DECREASE the pressure (as per our assumed goal), turn the screw COUNTER-CLOCKWISE. To INCREASE the pressure, you would turn it CLOCKWISE. Make only a small adjustment, such as a one-quarter to one-half turn, at a time. This prevents drastic changes and allows for fine-tuning.

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Step 4 · Adjust the Pressure Screw

With the locknut loose, you can now adjust the pressure. Use a flathead screwdriver to turn the adjustment screw. To DECREASE the pressure (as per our assumed goal), turn the screw COUNTER-CLOCKWISE. To INCREASE the pressure, you would turn it CLOCKWISE. Make only a small adjustment, such as a one-quarter to one-half turn, at a time. This prevents drastic changes and allows for fine-tuning.

Tools and Materials

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How to Adjust a Water Pressure Reducing Valve (PRV)

Step 4 of 6·20 min left

Preparation and Tool Gathering
5 mins3 itemsBeginner
Test Initial Water Pressure
5 mins2 itemsBeginner
Loosen the PRV Locknut
5 mins1 itemsIntermediate
4
Adjust the Pressure Screw
5 mins1 itemsIntermediate
5
Test and Re-adjust
10 mins2 itemsIntermediate
6
Secure the Adjustment and Finalize
5 mins3 itemsIntermediate
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