Everything You Need to Know About RV Water Pressure Regulators

What does a water pressure regulator do?

A water pressure regulator tames wild water (yes, water can be a little wild at times). Many city water hookups push out more pressure than your RV’s plumbing can handle. Though the ideal water pressure for your RV depends on the model and condition of the plumbing system, most modern RVs can withstand around 100 pounds per square inch (PSI). Most RVing professionals recommend a maximum pressure of 60 PSI, with 40–55 PSI considered standard; therefore, ensure that your pressure stays within the recommended limits.

This is where a water pressure regulator comes in. This nifty little gadget reduces water pressure to a safer level before the water even reaches your system. Without it, you’re not just risking a spike; you could be looking at leaks, blown-out pipes, or damage to your plumbing fixtures. It’s both messy and expensive (!), especially if it happens while you’re mid-trip. 

When do you need a water pressure regulator?

Always! Any time you’re hooking up to a pressurized water supply, especially if you’re on the road, or at campgrounds, truck stops, and even some residential hookups, you can have water pressure that varies significantly.

A water pressure regulator gives you peace of mind, especially if your RV is not built to handle high PSI (Most aren’t, sigh). If you use your coach frequently or rely on external hookups for daily use, make sure not to skip it.

What kind should you get?

Are you a set-it-and-forget-it type, or do you enjoy tinkering? A non-adjustable regulator is straightforward and usually preset to around 40–50 PSI. It’s a good choice if you're looking for something simple that works.

On the other hand, adjustable models allow you to fine-tune the pressure, which can be super helpful when dealing with pressure changes due to changes in altitude or pesky plumbing. Most people choose brass because it holds up well over time, but some RV manufacturers make specific recommendations. And if you'd like to keep an eye on things, a built-in pressure gauge is a nice perk.

There are plenty of options, but RV360, Valterra, Fairview, Camco, and Aqua Pro manufacture some of the most common and highly recommended water pressure regulators on the market.

Can you tell if it’s working?

Yes, and you should check frequently. If your water flow suddenly drops off or you start noticing leaks or bulges in your water hose, it may indicate that your regulator is clogged or failing. Over time, annoying debris and hard water can clog the system.

Some RVers also notice inconsistent flow at different faucets—that’s another clue to look out for! Also, a general rule, check your water pressure regulator at the start of each season and replace it every 3–5 years, or sooner, if it’s showing signs of wear.

How do I replace and install my water pressure regulator?

Don’t fret, you won’t have to stress with the thought of installing one. Swapping one out is easier than you might think; it’s not intimidating at all.

Here’s how to do it:

• Turn off the water at the spigot
• Disconnect your hose from the city water hookup
• Unscrew the old pressure regulator from the spigot
• Attach the new regulator (hand-tighten it, no need to crank it)
• Reconnect your hose to the new regulator
• Turn the water back on and check for leaks

Some regulators come pre-set to a safe PSI, while others let you fine-tune the pressure. Either way, it’s a quick fix that helps protect your entire water system.

Small but mighty

It might be small, but your water pressure regulator can save you a big headache (and money!) down the line. From protecting your RV investment to ensuring every faucet, toilet, and hose stays in good working order, a water pressure regulator is a wise investment for anyone who connects to an outside water source. You’ll barely notice the cost until you need one and don’t have it.

Do you need a water pressure check?

Stop by Transwest’s RV service center for a quick inspection or explore our RV inventory for models with upgraded plumbing and onboard filtration. We’ll be there to greet you and assist with any questions you may have.