Pressure-Reducing Valve
A valve installed at the main water inlet that reduces municipal water pressure to a safe 50–70 psi for household plumbing.
Quick answer
Pressure-Reducing Valve: A valve installed at the main water inlet that reduces municipal water pressure to a safe 50–70 psi for household plumbing. Typical cost: $250–$600 installed..
Why it matters
High pressure (80+ psi) destroys appliances, water heaters, and fittings. A failing PRV is often the hidden cause of mystery leaks and pinholes.
Typical cost
$250–$600 installed.
Pros
- • Extends appliance life
- • Reduces leak risk
- • Required by code over 80 psi
Cons
- • Wears out every 7–12 years
- • Lowers shower flow if over-restricted
Common uses
- • Any home with city water at 80+ psi
Alternatives
Whole-house regulator at meter (utility-installed)
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Frequently asked questions
- How do I know my PRV is failing?
- Test pressure with a $12 gauge at a hose bib — readings above 80 psi or wide swings mean it's failing.
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