Test first
A gauge on a hose bib with nothing running shows the static pressure. If it is high and the valve does not respond to adjustment, the valve has failed.
When the water pressure is too high
Pressure-Reducing Valve Replacement in Mesa and Phoenix
Test your home's water pressure and repair, adjust, or replace the pressure-reducing valve that protects pipes, fixtures, the water heater, and appliances from high street pressure.
Watch for these signs
Signs the water pressure is too high
- Pipes bang when a faucet or appliance valve shuts
- The water heater's relief valve drips or discharges
- Toilets run or refill on their own
- Faucets, supply hoses, and appliance valves fail early
- Sprinklers mist instead of spray
- Pressure changes through the day or after a valve was replaced
Our services
What we handle
- Static pressure testing at a hose bib
- Pressure-reducing valve adjustment, repair, and replacement
- Checking the strainer and the valve's setting
- Thermal expansion control where the system is closed
- Checking the water heater relief valve and its discharge line
- Low-pressure follow-up when a valve has failed the other way
Your options
Adjust, repair, or replace the valve
We look at the cause, the condition of the existing system, and what will work best for your property.
Age and scale
Hard water scales the valve's seat and spring. An older valve that has started to creep is usually replaced rather than rebuilt.
The rest of the system
A working regulator closes the system, so water that expands as it heats needs somewhere to go. The expansion tank and relief valve are checked as part of the same visit.
Around the Valley
Past the meter, the pressure is yours to control
The City of Phoenix says an acceptable pressure in its system is between 40 and 100 psi, that it does not regulate pressure beyond the meter, and that private pressure regulators are the home or business owner's responsibility. The plumbing code Mesa reviews against (2024 IPC section 604.8) calls for a pressure-reducing valve where a building's water pressure is over 80 psi, and section 607.3 calls for thermal expansion control.
Planning the work
What affects the price
- Valve size and the pipe it connects to
- Where the valve is and how easy it is to reach
- Whether shutoffs or unions need replacing too
- Expansion tank work on a closed system
- Repairs to fixtures already damaged by high pressure
What happens next
How a pressure visit works
- 1
We measure the static pressure and watch how it behaves.
- 2
The regulator's setting, strainer, and condition are checked.
- 3
You get the recommendation and the price before work begins.
- 4
The valve is adjusted or replaced and the final pressure is confirmed with a gauge.
Common questions
Before you schedule
Where is my pressure-reducing valve?
In many Valley homes it is on the main line where it enters the house, often near the front hose bib or in the garage. Some homes have one near the meter, and some have none.
How long does a pressure-reducing valve last?
It varies with water quality and pressure. Hard water shortens it. A valve that no longer holds its setting or creeps up overnight is due for replacement.
Can high water pressure damage my water heater?
Yes. High pressure, and the pressure rise from heating water in a closed system, strains the tank and makes the relief valve work. Controlling both protects the heater.
Can I adjust the valve myself?
Many valves have an adjusting screw, but turning it without a gauge is guesswork, and a failed valve will not hold a new setting. Measure first.
Related services
Related services and guides
Get help
Request pressure regulator service
Tell us what is happening and our team will be in touch.