A pressure reducing valve, often called a PRV, is a basic device that lowers high municipal water pressure before it can harm household plumbing. Many water mains deliver well over 100 psi, and some systems exceed 200 psi. Most plumbing codes call for a PRV when incoming pressure tops about 80 psi. For typical homes, setting a target of 50–70 …
Why a Professional Plumber Always Chooses a Watts Water Pressure Regulator








