Have you had a shower blast your face off one day and then trickle like a leaky straw the next? Sudden water pressure changes are frustrating—and they’re usually tied to a part of your system you’ve never seen: the water pressure reducing valve (PRV).
In this blog, we’ll explain what pressure reducing valves do, how they help prevent things like water hammering and noisy water pipes, and walk through the steps for adjusting the pressure reducing valve. Keep reading to keep your plumbing calm, not chaotic.
How Does a Pressure Reducing Valve Work and Why It Matters
A pressure reduction valve (also called a pressure reducer valve) helps control how much pressure flows into your home from the main water line. City water systems push out high-pressure water to cover long distances. However, too much pressure inside your pipes can cause leaks, noisy plumbing, and even burst lines.
That’s where the water pressure reduction valve steps in. Installed near the main shutoff, it slows things down to a safe level. Wondering where is the water pressure reducing valve located? It’s usually close to your main water line entry point or near your backflow prevention device. If your home has aging pipes or pressure that bounces around, a properly working valve can prevent damage and delay the need for major fixes like repiping plumbing or unexpected waterline repair.
How to Adjust a Water PRV
If your pressure is too high—or too low—here’s how to adjust the pressure reducing valve safely:
1) Find the Valve
Look near your main water line, close to the meter, or inside your basement. That’s where you’ll likely find your PRV.
2) Turn Off the Water
Shut off the water supply before making any changes. It keeps your system safe and mess-free.
3) Use a Pressure Gauge
Connect it to an outdoor spigot. Turn the water back on and take a reading. You’ll need this to set your baseline.
4) Adjust the Screw
Most valves have a screw or bolt on top. Tightening raises pressure; loosening lowers it. This is your pressure reducer adjustment.
5) Test the New Setting
Run the water again and check the gauge. Make small turns and recheck each time.
6) Secure and Monitor
Once it’s where you want it, secure the screw. Recheck in a few days to make sure the pressure stays stable.
Why Professional Help Makes a Difference
While adjusting a pressure reducer valve might look simple, it connects to your entire plumbing system. A professional plumber can spot bigger issues like valve failure, hidden leaks, or uneven pressure distribution. They can help you with precise water pressure reducing valve installation and repairs. Experts also bring tools to test pressure accurately, check, and solve other problems tied to water hammering causes or worn-out parts.
Let’s Take the Pressure Off—with Righty Tighty Plumbing
At Righty Tighty Plumbing, we deal with pressure problems daily. Whether it’s adjusting your water PRV, replacing a faulty regulator, or investigating noisy water pipes, we know exactly how to bring balance back to your plumbing system.
We serve homes and businesses in New Market, TN, and surrounding areas, offering everything from quick fixes to full installations. If you’re tired of wild water swings, we’re ready to step in and fix it right!
