Water Pressure Problems? Your PRV May Be the Cause.
Pressure reducing valve repair and replacement for homes and businesses across Metro East Illinois.
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
- Repair-first approach, we fix it when we can
- Licensed, Bonded & Insured
- 100% satisfaction guarantee
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From Emergency Repairs to Full Installations
Whether it’s a leaking pipe, a failing water heater, or plumbing for a brand-new build, our licensed team handles projects of every size across the metro east region.
Emergency Plumbing
Burst pipes, sewer backups, no hot water, when it can’t wait, we answer. Day or night, Priority Plumbing shows up fast and fixes it right the first time.
Drains &
Sewer
Slow drains, clogs, and sewer line problems don’t fix themselves. From drain cleaning to full sewer replacement, we diagnose the root cause and get it flowing again.
Commercial Plumbing
Businesses can’t afford plumbing downtime. We handle everything from backflow testing and maintenance contracts to restaurant drain service and new construction rough-ins.
Water
Quality
If your water smells, tastes off, or leaves buildup on everything — there’s a fix. We install whole-home filtration, water softeners, HALO systems, and treat well water at the source.
Water
Heaters
No hot water is never convenient. We repair, replace, and install both tank and tankless water heaters — usually same day, and always with upfront pricing.
Pumps
Sump pumps, well pumps, ejector pumps — we install, repair, and replace all of them. Don’t wait for a pump failure to become a flooded basement or a dry tap.
Emergency Plumbing
Burst pipes, sewer backups, no hot water, when it can’t wait, we answer. Day or night, Priority Plumbing shows up fast and fixes it right the first time.
Drains &
Sewer
Slow drains, clogs, and sewer line problems don’t fix themselves. From drain cleaning to full sewer replacement, we diagnose the root cause and get it flowing again.
Commercial Plumbing
Businesses can’t afford plumbing downtime. We handle everything from backflow testing and maintenance contracts to restaurant drain service and new construction rough-ins.
Water
Quality
If your water smells, tastes off, or leaves buildup on everything — there’s a fix. We install whole-home filtration, water softeners, HALO systems, and treat well water at the source.
Water
Heaters
No hot water is never convenient. We repair, replace, and install both tank and tankless water heaters — usually same day, and always with upfront pricing.
Pumps
Sump pumps, well pumps, ejector pumps — we install, repair, and replace all of them. Don’t wait for a pump failure to become a flooded basement or a dry tap.
When Your Water Pressure Isn't Right, the PRV Is Often Why
Most homes connected to a municipal water supply have a pressure reducing valve, a small but critical device where the main water line enters the house. Its job is to step down the high pressure coming from the street to a safe, consistent level for your home’s plumbing system. When it works, you don’t think about it. When it fails, the symptoms show up throughout the house.
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A failing PRV can cause water pressure that’s too low at every fixture, pressure that fluctuates unpredictably, banging pipes when water turns on or off, or, less obviously, pressure that’s dangerously high and stressing every pipe, fitting, and appliance in your home. We diagnose PRV problems and repair or replace the valve for residential and commercial customers throughout Metro East Illinois.
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Priority Plumbing Services is licensed, bonded, and insured in Illinois (License No. 055-045366). PRV repair and replacement is straightforward work when done correctly, we carry common replacement valves on our trucks and most jobs are completed same-visit. Every repair is backed by our 1-year warranty and 100% satisfaction guarantee.
Signs Your Pressure Reducing Valve May Be Failing
- Low Water Pressure Throughout the Whole House
When a PRV fails in the closed position, or becomes partially blocked, it restricts flow to everything downstream. If pressure has dropped at every fixture simultaneously and there’s no obvious cause like a main shutoff being partially closed, a failing PRV is one of the first things to check.Â
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Urgency: Schedule soon — house-wide low pressure points to a system-level issue that won’t resolve on its own.
- Water Pressure That Fluctuates or Surges
A PRV that’s wearing out doesn’t always fail completely, it can begin regulating inconsistently, causing pressure to vary throughout the day or surge when a fixture opens. If your shower pressure changes randomly or water hammers when you turn on the dishwasher, an unstable PRV may be the cause.Â
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Urgency: Schedule soon — pressure surges stress pipe joints, fittings, and appliances throughout the house.
- Banging or Knocking Pipes When Water Turns On or Off
Water hammer, the banging sound that happens when water flow suddenly stops or changes direction, is often caused by excessive pressure entering the home. A PRV that’s failed in the open position lets full street pressure into your plumbing system. That pressure creates water hammer, stresses pipe joints, and accelerates wear on every water-using appliance you own.Â
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Urgency: Call soon — persistent water hammer indicates high pressure that’s actively stressing your entire plumbing system.
- Pressure Relief Valve on Water Heater Keeps Discharging
If the pressure relief valve on your water heater drips or discharges periodically, the cause is often excessive water pressure entering the home, not a failing water heater. A PRV that’s allowed street pressure in unchecked will trigger the water heater’s safety relief valve repeatedly. Replacing the PRV often resolves the water heater symptom entirely.Â
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Urgency: Call soon — a water heater T&P valve that keeps discharging is a signal that incoming pressure needs to be addressed.
- Your Home Is on Municipal Water and Has Never Had a PRV Inspection
PRVs typically last 10–15 years. If your home is on city water and you’ve never had the valve inspected or replaced, and your home is more than a decade old, an assessment is worth having, especially if you’ve noticed any of the symptoms above or if your water pressure has changed over time.Â
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Urgency: No emergency — but a proactive check is far less expensive than dealing with the damage caused by unregulated high pressure.
Types of PRV Service We Handle
- PRV Inspection & Pressure Testing
Before recommending repair or replacement, we test your incoming water pressure and assess the valve’s current performance. Municipal water pressure in many Metro East Illinois communities runs 80–100 PSI or higher, well above the 60–80 PSI range that’s safe for residential plumbing. We confirm what’s actually coming in and how well the PRV is handling it.
- PRV Repair
In some cases, particularly with newer valves, internal components can be serviced or adjusted without full replacement. We assess whether repair is a viable option and perform it when it is. If the valve body itself is worn or corroded, replacement is the right call and we’ll tell you why.
- PRV Replacement
Full pressure reducing valve replacement with a properly sized, code-compliant unit. We carry common PRV sizes on our trucks, most residential replacements are completed same-visit. After installation, we test incoming and outgoing pressure to confirm the new valve is set and performing correctly.
- Commercial PRV Service
Commercial buildings often have larger diameter PRVs and higher demand requirements than residential. A failing PRV in a commercial facility can affect every water-using system in the building like restrooms, kitchen equipment, and HVAC. We service commercial pressure reducing valves throughout Metro East Illinois on the same licensed, insured basis as residential.
Benefits of Professional PRV Repair & Replacement
- Protect Every Pipe and Appliance in Your Home
The Plumbing Manufacturers International recommends incoming residential water pressure be maintained between 60 and 80 PSI. Pressure consistently above 80 PSI accelerates wear on pipe joints, fittings, washing machine hoses, dishwasher connections, and water heater components throughout the house. A properly functioning PRV protects all of it, for the cost of a single valve replacement.
- Diagnose the Real Cause of Multiple Symptoms
Banging pipes, a dripping water heater relief valve, fluctuating shower pressure, and washing machine hoses that keep failing can all trace back to a single failing PRV. Treating each symptom individually without addressing the pressure source wastes money and time. We identify whether PRV failure is the root cause before recommending any other repairs.
- Same-Day Resolution on Most Jobs
PRV replacement is a straightforward job for a licensed plumber. We carry common valve sizes and most residential replacements are completed in one visit, typically within a couple of hours from arrival. We test pressure before and after to confirm the fix before we leave.
- Repair First, Replace When It Makes Sense
Not every PRV problem requires a new valve. A recently installed valve that’s been knocked out of adjustment may just need to be reset. We assess the actual condition of the valve and recommend the minimum necessary fix, consistent with how we approach every service call.
- Licensed Work That Passes Inspection
PRV installation in a new home or replacement as part of a permitted plumbing project requires a licensed plumber. We’re licensed, bonded, and insured in Illinois, and every PRV job is backed by our 1-year warranty. If the pressure isn’t right after we leave, we come back and make it right.
Your Problem, Solved in 4 Simple Steps
We make the process simple so you can get back to what matters.
Call, Text, or
Book Online
Reach out however works best for you. Prefer not to talk on the phone? Book through our online scheduler anytime.
Get a Quote or Get Scheduled
Need a price first? We'll give you one. Ready to go? We'll get you on the schedule — same day when possible. You'll get a text or email confirmation.
We Show Up and Do the Work
Our licensed team arrives on time, explains what we're doing, and treats your home like our own. No surprises.
Transparent Billing, Warranty in HandÂ
You get a clear invoice and a 1-year warranty on our work. If anything isn't right, we come back and fix it.
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Proudly Serving Five Counties Across Southern Illinois
From our home base in Pocahontas, we serve homes and businesses across Madison, Bond, Clinton, Montgomery, and Macoupin Counties. One local team that shows up fast and gets it done right. If you’re in the Metro East or surrounding areas, we’ve got you covered!
Pressure Reducing Valve Questions
How do I know if my home has a PRV?
Most homes connected to municipal water in Metro East Illinois have a PRV installed where the main water line enters the house, typically near the main shutoff valve in the basement, crawlspace, or utility area. It looks like a bell-shaped or dome-shaped device on the pipe. If you’re not sure, call us and we’ll help you locate it.
How long do pressure reducing valves last?
Most PRVs last 10–15 years with normal use. Hard water, common throughout Metro East Illinois, can shorten valve life by causing mineral buildup on internal components. If your PRV is approaching that age range and you’ve noticed pressure changes, an inspection is worth having before it fails completely.
What pressure should my PRV be set to?
For most residential homes, 60–75 PSI is the recommended range, enough for good fixture performance without stressing the plumbing system. Commercial and multi-unit buildings may require different settings based on building height and demand. We set and verify pressure output as part of every PRV replacement.
Can high water pressure really damage my plumbing?
Yes. Persistent pressure above 80 PSI accelerates wear on pipe joints, valve seats, washing machine supply hoses, dishwasher inlet valves, and water heater components. It’s one of the leading causes of premature plumbing failure in homes on municipal water. A properly functioning PRV is inexpensive protection against downstream repair costs.
My pipes bang when I turn water on or off, is that a PRV issue?
It can be. Water hammer, the banging sound caused by sudden pressure changes, is often triggered by high incoming pressure that a failing PRV is no longer controlling. It can also be caused by loose pipe strapping or a waterlogged expansion tank. We diagnose the actual cause before recommending a fix.
Do you service commercial PRVs?
Yes. Commercial buildings often have larger PRVs and more complex pressure zoning requirements than residential. We service commercial pressure reducing valves throughout Metro East Illinois, same licensed, insured standard as residential work. Call (618) 207-1647 to discuss your building’s setup.