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Behind the Build: How to Pressure Test a Camper Van Water System

Behind the Build: How to Pressure Test a Camper Van Water System

Pressure testing is one of the most important steps in building a reliable camper van water system. It’s how leaks are caught early, connections are confirmed, and long-term issues are prevented before a van ever leaves the shop. At Field Van, our experienced service technicians follow a consistent process to make sure every water system is sealed, secure, and ready for the road.

Meet two of our seasoned professionals, Cowboy, a technician with seven years at Field Van, and Mario, a service supervisor with more than 25 years of experience. Their hands-on approach reflects the level of care and precision that goes into every build.

Why pressure testing a van water system matters

A properly tested water system protects the interior of the van, supports daily functionality, and prevents costly repairs later on. Even a small leak can cause:

  • Mold and mildew
  • Damage to cabinetry and flooring
  • Electrical concerns
  • Ongoing maintenance issues

Pressure testing helps confirm the system is airtight and watertight before regular use.

Step 1: Test the system with air pressure first

Before adding water, begin with an air pressure test — a standard method used in camper van and RV plumbing.

The process includes:

  1. Pressurizing the system to 80 lbs using air
  2. Letting it sit for about 30 minutes
  3. Monitoring closely to ensure the pressure holds steady

Any drop in pressure signals a loose fitting, imperfect seal, or potential leak that needs to be addressed before moving forward. This step allows technicians to confirm the integrity of the system without introducing water too early.’

Step 2: Add water and inspect every connection

Once the system holds pressure successfully, water is introduced and the inspection continues.

Technicians then:

  • Check all fittings along the pipelines
  • Look for any signs of leaks or moisture
  • Confirm connections are secure and aligned
  • Ensure the system performs under real-use conditions

Tools like air compressors and detailed visual inspections help verify that everything is functioning as it should.

 

Best practices for DIY van builders

For those building their own vans, this same process can serve as a reliable guide:

  • Pressure test before adding water
  • Monitor PSI over time rather than relying on a quick check
  • Inspect each fitting individually
  • Re-test after making plumbing adjustments

Taking the time to do this properly can prevent major issues down the road and improve the overall longevity of the system.

Built to last on and off the road

At Field Van, the goal isn’t just to install a water system that works — it’s to build one that owners can depend on for years of travel. From the first air pressure test to the final inspection, each step is designed to prioritize safety, durability, and real-world performance.

WATCH THE FULL VIDEO ON OUR YOUTUBE CHANNEL – CLICK HERE

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