A pressure reducing valve (PRV) is installed in the plumbing of homes and commercial buildings to regulate water pressure. They reduce incoming water pressure from public water mains to a pressure that is safe for a customer’s plumbing system.

Homes built in geographic low points or near a water pumping station may experience higher-than-normal water pressure. Sustained pressure that exceeds 80 psi can damage onsite plumbing systems and appliances. A PRV can prevent potential damage from occurring. a typical pressure reducing valve 

Most homes built in North Carolina prior to 2007 do not have PRVs. Prior to 2007, the NC Plumbing Code* did not require PRVs to be installed in buildings where water pressure exceeds 80 psi. If you are unsure if you have a PRV installed at your home, you can usually locate it along your water line just after the line comes into your home and after the water shut off valve. 

If you have not already installed a PRV in your home, we recommend you consider having a licensed plumber install one to ensure that your home’s piping and appliances operate under a safe, moderate, but satisfactory pressure.

If your home does have a PRV installed, generally accepted plumbing practices recommend having a licensed plumber check it every year and replacing it every 3-5 years, as its parts will deteriorate. 

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