A pressure reducing valve (PRV) is a straightforward device that prevents excessive municipal pressure from damaging home plumbing. Some municipal mains deliver water 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 typical homes, setting a target of 50–70 psi protects …
How to Safely Rebuild a Watts Regulator Using an Official Repair Kit





