A pressure reducing valve (PRV) is a straightforward device that helps prevent excessive municipal pressure from damaging home plumbing. Some municipal mains operate above 100 psi, and certain systems can even exceed 200 psi. Many plumbing codes require or recommend a PRV when inlet pressure rises above roughly 80 psi. For many homes, a 50–70 psi target combines plumbing protection …
How to Safely Rebuild a Watts Regulator Using an Official Repair Kit








