A pressure reducing valve (PRV) is an important part of your plumbing system, as it helps regulate the water pressure in your home. If a PRV fails and the pressure in your pipes gets too high, it can cause all kinds of problems, from plumbing fixtures failing to appliances leaking and more.
If your pressure regulator has failed, you'll know it right away. The water pressure in your faucets will be either too high or low. You will not be able to maintain a steady, healthy pressure at your sinks, showers or tubs. You can also check your water pressure regularly to monitor for issues.
A faulty fuel pressure regulator can cause a loss of fuel pressure. As a result, the engine may exhibit performance problems, such as hard-starting, rough running, stalling, and a lack of power.
The required type of PRVs can cost anywhere from $90-$200 and can be purchased at a big box store. A plumber will charge anywhere from $200-$800 for materials and labor but a homeowner with a moderate level of maintenance knowledge might be able to switch out their PRV.
Nearly 99% of PRV failures happen because of installation or re-installation issues. And when a PRV fails, it can lead to an explosion. Damaged equipment, disrupted work flow, and even injury may result. Why take that risk when you can easily tell whether or not your pressure relief valve needs replacing or repair.
The easiest way to know if a pressure regulator works correctly is to install a pressure gauge on each side of the regulator. You can measure the inlet pressure with a pressure gauge above the regulator, and the outlet pressure with a gauge below the regulator, as shown in the image below.
How to Know It's Time for a Replacement. How long does a water pressure regulator last? On average, you should replace your PRV every four to five years.
In some cases, your pressure regulator is set too low and reduces the water pressure too much. The factory setting on a pressure regulator is normally between 45 to 55 psi. However, you may need pressure regulation between 40 and 70 psi to have proper water pressure throughout your home.
Pressure Relief Valve – $20 to $200
If you notice that the valve is consistently leaking, it may mean that the tank's pressure is too high, or you might simply have a faulty/clogged valve. The cost of a new pressure relief valve is about $20, and repairs may total to $200.
High or Low Output Pressure: If the output pressure is too high or too low, it can be caused by a variety of factors such as a damaged diaphragm, a clogged regulator, or an incorrect pressure setting. To troubleshoot this problem, check the diaphragm and regulator for any damage or wear.
Telltale signs that the regulator is going bad include: Water pressure is lower/higher at all faucets. Toilet tanks take longer to refill. Water pressure from showerheads is low.
Banging or Clanging Noises in Pipes
This is a sign that the pressure in your pipes is already extremely high, and the shuddering is your pipes adapting to the pressure increasing when you turn off the water. This also means that you could find yourself dealing with plumbing leaks within a short period of time.
How can I tell if I need a PRV? You can purchase a simple, yet effective pressure gauge at local hardware or home improvement stores. Screw the gauge onto any hose bib or washing machine faucet and turn on the cold water tap to measure the water pressure. If it's between 40 and 60 psi, you should be okay.
The average cost to replace a water pressure regulator ranges from $300 to $650 for most homes, including labor and materials. However, the cost to install a water pressure-reducing valve can vary significantly depending on your location, the regulator type, and the installation complexity.
The PRV won't last forever, though. They are made with rubber parts and springs that will eventually wear out or get gummed up with particles in the water. Usually, PRVs fail slowly over time. It may take a while for you to notice there is an issue, especially if your usage habits aren't very demanding.
How often should you change your PRV? A PRV will typically last 10-15 years with some lasting up to 20. The lifespan will depend on a variety of factors. At the first signs of water pressure issues, water pipe noise, or visible corrosion on your PRV, you should have it inspected.
Do All Homes Have a Water Pressure Regulator? No, and in some cases, you may not need one. Certain municipal supplies regulate their water pressure safely, but if that pressure runs above 80 psi, you'll want to protect your plumbing system by installing one.