How to Fix a Pressure Relief Valve in a Raft or Kayak


pressure relief valve


At Leafield Marine, we have been designing and manufacturing inflatable kayak valves for decades, meeting demanding international standards to guarantee product quality.

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Our valves for inflatable rafts and kayaks protect vessels from over-inflation and excess pressure. Additionally, they can be easily removed for cleaning.

The pressure relief valve (PRV) is a critical component in a raft or a kayak that prevents the vessel from over-inflation. This can occur because of user failure, the build-up of heat, or an unexpected impact with an underwater obstacle.

Unfortunately, due to the location of the valve in the floor of the raft or kayak, sand or other debris can enter the valve seat, causing a leak. While some PRVs are fitted with a mesh screen, which filters out larger particles, fine particles can sometimes become caught in the sealing surface, and cause leaks.

What steps should you take to resolve the issue?

How To Cure a Leak From a Pressure Relief Check Valve

Deflate the raft or kayak and remove the valve. Make sure the nut does not fall into the tube as it is difficult to retrieve. Open the valve by pushing on the end of the stem as shown. Do not use any tools to open the valve. 

With the valve held open, submerge it in warm water with a small amount of washing up liquid mixed in. Move the valve backwards and forwards for a few seconds so that water is forced through the valve, removing dirt and debris. After this, flush the valve through with fresh water for one final clean. 

Alternatively, the valve can be placed under running water whilst the valve is continuously opened and closed to allow the water to flow through the valve. Run water through both the top and bottom of the valve. 

Remove from the water and shake the valve to remove the remaining water. You can use an air-line to blow through the valve, clearing out any remaining debris and dry out the valve. 

Allow the valve to dry completely before re-fitting to the structure. 

Re-install in accordance with the manufacturer’s instructions.

If the valve still does not seal it must be replaced.


What If The PR Valve Is Still Leaking?

If, despite all your efforts, the pressure relief valve is still leaking, you may need to replace it. 

For valves for repairs and upgrades, please contact our Distributors.