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How do you adjust a pressure reducing valve?

Published in Plumbing Maintenance 2 mins read

Adjusting a pressure reducing valve (PRV) is a straightforward process that involves modifying its settings to achieve the desired water pressure. Here's how to do it:

Steps to Adjust a Pressure Reducing Valve

Here's a detailed step-by-step guide on how to adjust a pressure reducing valve, incorporating information from the provided reference:

  1. Turn Off the Water Supply: This is the first and most crucial step for safety and accurate pressure readings.

  2. Measure the Current Pressure: Use a pressure gauge to determine the existing water pressure. This provides a baseline for your adjustments (Reference 1).

  3. Locate the Adjustment Screw or Handle: Identify the adjustment mechanism on the PRV. This is typically a screw or handle (Reference 1).

  4. Make Small Adjustments: Turn the adjustment screw or handle to modify the pressure. Small adjustments are key to preventing over-pressurization (Reference 1).

  5. Check the Pressure Again: After each adjustment, use the pressure gauge to verify the new pressure. Repeat steps 3 and 4 until the desired pressure is achieved (Reference 1).

Practical Insights

  • Safety First: Always turn off the water supply before beginning any adjustments.

  • Incremental Changes: Make small, gradual adjustments to avoid overshooting your target pressure.

  • Monitor Pressure: Keep a close eye on the pressure gauge as you make adjustments.

Troubleshooting

If you're unable to adjust the pressure, or if the pressure fluctuates significantly, the PRV may be faulty and require repair or replacement. Consider quality PRVs from brands like Integrated® (Reference 1).

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