How to test
A hose-bibb pressure gauge costs little at any hardware store. Test with all fixtures off. Readings above 80 psi mean you need a working PRV.
Signs of high pressure
- Banging pipes (water hammer)
- Running toilets and dripping faucets
- Water heater relief valve dripping
- Short-lived fixtures and supply lines
PRVs and expansion
A PRV creates a closed system, so thermal expansion control at the water heater is typically required.
Hilly areas
Elevation changes in Lakeway, Stone Oak and other hillside areas can push pressure well above 80 psi.
Enter your pressure into the Fixture Unit Calculator for a quick check, or book a home plumbing assessment.