PRV Valve Replacement — Fix Low or High Water Pressure in Frisco & Plano
Does your water pressure feel too strong or too weak? You might have a failing PRV.
Most people don’t even know what a Pressure Reducing Valve (PRV) is until something breaks. But this small valve plays a huge role in protecting your home’s plumbing system.
City water systems often push high water pressure to make sure it reaches every property. That’s good for the city but not always good for your home. According to plumbing code, residential water pressure should stay between 40 PSI and 60 PSI. Anything above 80 PSI is considered too high and may legally require a PRV.
We’ve tested homes with 100 PSI-120 PSI, and homeowners had no idea. “High pressure feels great in the shower,” they say. Sure but it’s also silently destroying your plumbing.
High Water Pressure Can Damage Valves, Fixtures, and Pipes
- Faucet cartridges and rubber seals
- Toilet fill valves and shutoff valves
- Water heater components and safety valves
- Copper or PEX pipe connections
- Ice makers, dishwashers, washing machines anything connected to water
It’s like having a time bomb in your plumbing system. It might not burst today but eventually something will.
PRV Replacement Timing: How Long Does a Pressure Reducing Valve Last?
In our experience, PRVs last around 5 to 10 years. After that, they often fail silently either letting through too much pressure or restricting flow too much.
Pressure Reducing Valve Problems: PRV Is Broken , Low or High Pressure
- Sudden drop in water pressure after 20–30 seconds
- Toilets that refill slowly
- Faucets that hiss, pulse, or rattle
- T&P valve dripping on the water heater
- Water hammer or pipe vibration
- Inconsistent water pressure around the house
Sometimes it’s subtle. Sometimes it ends in a flood.
PRV Causing Low Water Pressure? Symptoms & Fixes
PRVs don’t just protect you from high pressure they can also cause low pressure if they clog up.
Over time, calcium, rust, or debris from the city line can block the valve. We’ve seen homes where one old PRV made the whole house feel like there was barely any water flow.
In other cases, pressure starts strong, then drops off after 20 seconds a classic symptom.
How to Adjust PRV Valve? Let a Licensed Plumber Check It
Pressure Reducing Valves come with a feature to adjust water pressure manually usually by turning a bolt on top of the valve.
But here’s the catch: on old valves, that adjustment often doesn’t work. The internal components may be worn out, full of scale, or completely stuck.
We’ve seen many cases where clients tried to adjust the water pressure, but nothing changed because the valve was already done.
That’s why we always test first, measure PSI before and after, and then explain what really needs to be done. If it can be adjusted we’ll adjust it. If it can’t we’ll replace it with something reliable.
Missing Pressure Reducing Valve in New Construction
We’ve seen brand new homes with pressure over 110 PSI and no PRV at all.
Builders skip it. Inspectors miss it.
You end up paying for the repairs.
A simple test today can save you thousands tomorrow.
Pressure Valve Questions We Get All the Time
How do I know if I need a pressure reducing valve?
If your water pressure is over 80 PSI or you hear banging pipes, whistling, or appliances wearing out too fast — you probably need one. We check the pressure and tell you straight.
Can’t high water pressure be a good thing?
Not really. It feels strong, but it ruins pipes, water heaters, faucets, and even washing machines. It’s like running your car engine at redline 24/7 — it won’t last long.
Where does the PRV go and who installs it?
Don’t pour grease down the sink. Use hair catchers. And get your drains cleaned professionally every year or two.
Schedule a Pressure Check with FPP Plumbing
We’ve handled over 1,800 service calls across North Dallas. Pressure problems are more common than people think.
Let us bring the gauge, test your system, and show you what’s really going on.
If your PRV is bad we’ll replace it.
If it just needs a tweak we’ll fix it.
If your home’s fine we’ll leave you in peace.
Call or text us now to schedule your inspection.
We serve Frisco, Plano, McKinney, Allen, Little Elm, The Colony, and the entire North Dallas area.
