You have probably encountered either of these valve types if you have ever tried to inflate a bike tire with a bike floor pump, mini bike pump, or CO2 inflator.
So…
What is the difference between Presta and Schrader valves?
The main difference between Presta and Schrader valves is that Presta valves are narrower. Therefore, they are mostly used on bicycle tubes, while Schrader valves are more prevalent on motorbikes and cars. However, some bicycle tubes still use Schrader valves.
Continue reading to learn more about their pros, cons, and other differences.
What Is a Presta Valve?
Presta valves, also known as French valves or Sclaverand valves, are narrow in diameter (6 mm) and often have a removable core.
Thanks to their narrowness, the rim hole is smaller, reducing the weak point of the wheel.
The Presta valve core has a small screw that you have to untighten to allow for inflating tires.
Once you inflate it to the desired pressure, you must tighten it to avoid air leaks.
Presta valves are usually used on road, mountain, gravel, and other bikes with higher tire pressures.
How to Inflate the Presta Valve?
To inflate the Presta valve, follow these steps:
- Remove the dust cap and untighten the small screw on the top of the valve core.
- Push the core down to make sure it’s moving smoothly.
- Attach the pump head (the Presta valve side), lock it with the lever, and start inflating.
- Once you inflate the tire, gently remove the pump head and tighten the screw.
- (Optional) Put the dust cap back on.
What Is a Schrader Valve?
Schrader valves, also known as American valves, are 8mm wide in diameter and have a removable core.
They require a wider rim hole, making them common on wider wheels and wheels of vehicles such as cars and motorcycles.
However, some older bicycles or low-end hybrid and mountain bikes use them too.
Unlike Presta valves, you don’t need to untighten a screw to allow airflow. Instead, just start inflating, and the air will go through.
How to Inflate the Schrader Valve?
To inflate the Schrader valve, follow these steps:
- Remove the dust cap.
- Attach the pump head (the Schrader valve side), lock it with the lever, and start inflating.
- Once you inflate the tire, gently remove the pump head.
- (Recommended) Put the dust cap back on.
What Are the Differences Between Presta and Schrader Valves?
The following table shows the differences between Presta and Schrader valves.
| Feature | Presta valves | Schrader valves |
|---|---|---|
| Invented | 1920s | 1891 |
| Diameter | 6 mm | 8 mm |
| Removable core | Mostly yes | Yes |
| Valve locknut | Yes | No |
| Valve core screw | Yes | No |
| Various lenghts | Yes | Yes but limited |
| Dust cap | Yes | Yes |
| Usage | Road, mountain, gravel, and similar bike types | Low-end hybrid and mountain bikes Cars, motorbikes |
Presta vs. Schrader Valves: Pros & Cons
Presta valves are commonly preferred for high-pressure applications due to their self-sealing design.
However, their thin core makes them more susceptible to damage when removing the pump head than Schrader valves.
Presta valves are also available in more lengths, making them suitable for deep-section carbon wheels. Plus, you can extend them using adaptors.
In contrast, Schrader valves are easier to use because they don’t need to be unscrewed.
Presta vs. Schrader Valves: FAQ
Conclusion
Nowadays, Presta valves are the more common valve type found on bicycles. They are preferred for high-pressure applications due to their self-sealing design.
However, they are more delicate and susceptible to damage, particularly when detaching the pump head. Handle them with care!
Please comment below if you have any further questions regarding Presta or Schrader valves.
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