How do you inflate a Dunlop valve?

One of the most common valves on bicycles in the Netherlands is the Dunlop valve, also known as the Blitz valve. If you are new to the world of cycling or just need a refresher, it is important to know how to properly inflate your tire with a Dunlop valve. In this blog we explain how to do this easily and effectively.

What is a Dunlop valve?

The Dunlop valve is often found on city bikes, children's bikes and sometimes also on older bikes. It looks like a Presta valve, but works a little differently. This type of valve consists of a rubber valve tube that keeps the air inside and is relatively easy to use.

Supplies

To inflate a tire with a Dunlop valve you will need the following:

• A bicycle pump that is compatible with Dunlop valves.
• Possibly a valve adapter if your pump does not have a standard connection for Dunlop valves.

Step-by-step plan for inflating a Dunlop valve

1. Preparation
   Before you start, it is important to have the right pump at hand. Most bicycle pumps in the Netherlands are suitable for Dunlop valves, but it does not hurt to check if your pump is compatible. Do you have a pump that is only suitable for Presta or Schrader valves? Don't worry, you can use an adapter that makes the valve fit your pump.
2. Remove the valve cap
   Unscrew and remove the valve cap. This small cap protects the valve from dirt and dust, so keep it safe while inflating.
3. Check the valve
   Sometimes the rubber valve tube of a Dunlop valve can get stuck, especially if you haven't used it for a while. Press the valve briefly once to check that it is not stuck. If air comes out, everything is fine and you can continue inflating.
4. Confirm the pump
   Place the pump head firmly on the valve. Most pumps require you to flip a lever to hold the pump in place. Make sure the connection is tight so that no air escapes while pumping.
5. Inflate the tire
   Start pumping. With a good connection you will feel the air flowing into the tire. Keep an eye on the pressure of the tire. For city bikes the recommended pressure is usually between 3.5 and 4.5 bar, depending on the type of tire and your own preference.
6. Remove the pump
   Once the tire is secure enough, remove the pump head from the valve. Sometimes some air may escape when you loosen the pump, but this is normal and nothing to worry about as long as the valve stays secure.
7. Replace the valve cap
   Screw the valve cap back onto the valve. This helps keep dirt out and protects the valve from wear.

Common Problems and Solutions

• The valve leaks after inflation : Check if the rubber tube in the valve is seated properly. Sometimes it helps to remove the tube and reinsert it.
• The pump does not fit the valve : Make sure your pump is suitable for Dunlop valves. Our electric tire pump is suitable for the Dunlop valve.
• The tire is deflating quickly : This may indicate a leak in the inner tube. Check the tire for holes and repair if necessary.