How to Replace Your WaterPORT Fill Valve Step by Step
By Klymit - Official Site | Lightweight Camping Gear | Published: 2026-10-27
Category: How-to Guides
Learn how to replace your WaterPORT fill valve step by step, including removal, installation, and leak testing. Keep your camp water tank working reliably.
Quick Answer
To replace your WaterPORT fill valve, remove the old valve from the tank, install the new fill valve with a secure seal, and test with water to confirm it pressurizes correctly.
Why a Proper Seal Matters
A loose or worn fill valve can cause slow leaks or prevent your tank from holding pressure. The fill valve is the main entry point for water from a garden hose, so a good seal is essential for reliable camp showers and washing tasks.
If you're replacing the valve on an RV, overlanding rig, or portable tank, the same steps apply. Just make sure the new valve matches the threading on your tank opening.
Step-by-Step Replacement
- Drain the tank: Open the spout or drain valve to empty all water from the tank. This prevents spills and makes the valve easier to access. Check that the tank is completely dry before moving to the next step.
- Remove the old valve: Use a wrench to unscrew the fill valve counterclockwise from the tank opening. If it is stuck, apply penetrating oil and wait a few minutes before trying again. Avoid using excessive force—if it won't budge, reapply oil and try again.
- Clean the threads: Wipe the tank opening threads with a clean cloth to remove debris, old sealant, or tape. This ensures a clean surface for the new valve. Inspect the threads for damage; if they are stripped, the tank may need professional repair.
- Apply thread sealant: Wrap plumber's tape clockwise around the new valve threads, or apply a thin layer of pipe sealant. This helps create a watertight seal. Do not over-wrap; two to three layers of tape are usually enough.
- Install the new valve: Screw the new fill valve clockwise into the tank opening by hand until snug, then tighten with a wrench about a quarter turn more. Avoid over-tightening, which can crack the tank. Hand-tighten first to avoid cross-threading.
- Test for leaks: Attach a garden hose, turn on the water, and check for drips around the valve. If you see leaks, tighten slightly or reapply sealant. Leave the tank pressurized for a few minutes and recheck to ensure the seal holds.
Product Facts
- Fill Valve: The WaterPORT fill valve comes standard with every 4 Gallon Day Tank and 8 Gallon Weekender Tank and is required to safely fill and pressurize your tank from a garden hose. Using the genuine fill valve ensures a correct fit and safe pressurization, so you can trust your tank to hold water and maintain pressure during use.
Fill Valve
