This post may contain affiliate links or mention our own products, please check out our disclosure policy.

How To Adjust The Pressure Switch On A SHURflo Water Pump

Some RVers aren’t content with the water pump that comes standard with their travel trailer. For example, Ray at LoveYourRV replaced his FloJet brand water pump on his Cougar fifth wheel trailer with an aftermarket SHURflo water pump:

The Cougar fifth wheel came with a FloJet brand water pump. Being only a cheaper 3 chamber style pump, it was noisy with a machine gun vibration. Even more so because of the way it had been plumbed without a flexible hose on the output piping.

Sometimes though, you might not need to replace the pump at all! If your pump is cycling on and off and giving you an uneven mix of hot and cold water, you might need to simply adjust your water pump’s pressure switch.

Sign up for the newsletter today!

Please enter a valid email address.

An error occurred. Please try again later.

× logo

Thank you for subscribing to the Do It Yourself RV newsletter, keep your eye on your inbox for updates.

What is a Pressure Switch?

A pressure switch is a type of switch that creates an electrical circuit when a certain set pressure has been obtained. The switch could ‘activate’ either on a pressure rise or a pressure fall.

Chris from Rocky Mountain Four Wheel Campers will show you how to adjust the pressure switch on a SHURflo water pump. Don’t suffer from jerky water pressure or fits of hot and cold water any longer!

…water leaves the shower side of the system much slower than it does in the sink. So when you turn the sink on it may not cause the pump to cycle, but then when you’re running the shower fixtures, either inside or outside, you may start to witness the pump cycling and then again, therefore an uncomfortable mix of water.

Adjusting a Shurflo pump pressure switch.

Quick review of the steps involved in adjusting the pressure switch of a SHURflo water pump talked about in the video:

  1. You don’t need to take the pump out of the camper – or take the pressure switch apart!
  2. Look for the allen screw on the top of the pressure switch
  3. Turning clockwise will result in a more sensitive switch (more likely to cycle)
  4. Turning counterclockwise makes the pump less likely to cycle
  5. Use your shower and determine when the pump cycles
  6. Turn the allen screw counterclockwise until the pump no longer cycles while the shower is on (the pump should remain on while you are taking a shower, and turn off when you shut the shower fixture)

Important to remember: you don’t want the pump turning off when you’re taking a shower!

Support Do It Yourself RV

Do It Yourself RV is run by RVers who share the most up-to-date and valuable content on camping and RVing every week. We couldn’t do it without the support of our readers just like you.

You can help support the efforts of Do It Yourself RV by becoming an RV LIFE Pro subscriber, which gives you access to:

  • RV LIFE App, an RV Safe GPS™ with voice- and lane guidance, even offline.
  • RV LIFE Trip Wizard, a visual RV trip planner with custom RV-safe routes and a comprehensive directory of RV parks, resorts, and campgrounds.
  • RV LIFE Maintenance, a cloud-based service that tracks your RV maintenance and provides reminders, reports, and related documentation.
  • RV LIFE Masterclass, an online educational platform where RV experts share tips and advice on everything you need to know about RVing.

If you value our site and want to see us continue to grow, please consider supporting us by becoming an RV LIFE Pro subscriber today.