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Take Corrective Action — Adjust or Replace the Pressure Reducing Valve (PRV)

Beginner3 hours

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Boost Low Water Pressure: A DIY Guide to Higher Home Water Flow · Step 2 of 3

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If your water pressure is above 70 PSI, it means the pressure-reducing valve (PRV) on your main water line has likely failed. This is not a DIY repair. You must hire a licensed plumber to replace the valve. Using a professional ensures the job is done correctly and protects you financially, as their insurance would cover any damage resulting from an improper installation. Failing to address high pressure puts your home at risk for catastrophic flooding and expensive water damage.

Goal: Address high water pressure by hiring a professional

  • Replacing a pressure-reducing valve is not a DIY task. Always use a licensed plumber.
  • If you install it improperly yourself, you are liable for all resulting water damage.
  • A licensed plumber's insurance will cover any damages if the replacement fails in the future.
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FAQs

What's the most critical first step before starting this project, and what safety precautions should I take?

The most critical first step is to locate and fully open your main water shutoff valve, as a partially closed valve is a common cause of low pressure. Before working on the PRV, know how to shut off your home's main water supply and have towels ready for potential leaks to prevent water damage.

What specific tools are essential for this project, and is the listed Wilkins PRV the only option?

You'll primarily need pliers and a multi-head screwdriver for cleaning aerators and adjusting/replacing the PRV. While a Wilkins 1 in. PRV is listed as an example material, you must verify the size and type compatible with your home's existing plumbing before purchasing a replacement.

I've cleaned all my showerheads and faucet aerators, but my water pressure is still low. What should I investigate next?

If cleaning aerators didn't resolve the issue, the next step is to focus on your home's Pressure Reducing Valve (PRV). First, reconfirm your main water shutoff valve is completely open. If the problem persists, your PRV might be faulty or set too low, requiring adjustment or replacement.

How can I safely and effectively adjust my home's Pressure Reducing Valve (PRV) without causing damage?

Locate the adjustment screw on your PRV (often on the bell-shaped top). Turn it clockwise slowly, making small adjustments like a quarter turn at a time, to increase pressure. Test the water pressure after each adjustment, avoiding overtightening, as excessive pressure can damage your plumbing fixtures and pipes.

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pressure reducing belt has failed. This is not something your average to do yourself or can replace themselves. You should actually have a license plumber replace it for you. That way, if there's ever any problems with it in the future, you call that plumber back and his insurance may cover all the damage it might have caused if you install them improperly. So if the water pressure in your home currently exceeds 70 PSI, your home is susceptible to a disaster like a flood. I've been in numerous homes up to my ankles in water and seen disasters that could have been prevented by people doing annual checks of their plumbing system. So replace the pressure reducing belt, use a licensed plumber. Did you know last

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