With the Schwalbe Tube 26" No. 12 (DV12), you can rely on your tours. The 26-inch bicycle tube made of butyl is characterized by its uniform wall thickness and above-average air retention. The 40 mm long Dunlop valve (DV) makes it the right choice for correspondingly equipped bicycles.

Thanks to its wide range of sizes, the Schwalbe No. 12 is suitable for various tire dimensions. It is a straightforward standard bicycle tube for anyone who values reliable function and proven quality.

Which bicycles and tires is the Schwalbe DV12 suitable for?

The Schwalbe Tube No. 12 was developed for bicycle tires of the 26-inch class and covers several ETRTO tire sizes. ETRTO refers to a standardized sizing system for tires and rims and helps you select the right combination of tube and tire.

The combination of butyl, uniform wall thickness, and high air retention makes the tube a reliable solution for everyday use.

Suitable for:

• 26-inch bicycles with compatible tire size
• Tires with ETRTO 47-559
• Tires with ETRTO 47-571
• Tires with ETRTO 30→47-584
• Tires with ETRTO 32→44-590
• Tires with ETRTO 32-597
• Rims for Dunlop valves (DV)

Advantages & Features

• ✅ Above-average air retention thanks to high-quality material and uniform wall thickness.
• ✅ Proven butyl tube for reliable and uncomplicated use on the bicycle.
• ✅ Wide range of sizes with several compatible ETRTO tire dimensions.
• ✅ 40 mm long Dunlop valve for rims designed for this classic valve type.
• ✅ Only 140 g weight with a solid standard version.
• ✅ Proven Schwalbe quality with a construction designed for high reliability.

Technical Details

• Brand: Schwalbe
• Model: Tube No. 12 (DV12)
• Category: Bicycle tube
• ETRTO: 30/47-559/597
• Size range (ETRTO): 30→47-584, 32-597, 32→44-590, 47-559, 47-571
• Wheel size: 26 inches
• Material / Type: Butyl
• Version: Standard
• Valve: DV
• Valve length: 40 mm
• Weight: 140 g
• Schwalbe designation: 12

Technologies & Materials Explained Simply

1. What is a butyl tube?
   Butyl is the material of the Schwalbe No. 12. In combination with the uniform wall thickness, it ensures that air is retained for an above-average length of time. This makes the tube suited for reliable use.
2. What does DV mean?
   DV stands for Dunlop valve. The Schwalbe No. 12 features a Dunlop valve with a valve length of 40 mm. When selecting, ensure that this valve type matches your rim.
3. What does ETRTO mean?
   The ETRTO designation describes the tire size according to a standardized system. When selecting the appropriate tube, you can compare the ETRTO designation of your tire with the specified size range of the Schwalbe No. 12.
4. What distinguishes the Schwalbe Tube No. 12?
   The Schwalbe Tube 26" No. 12 (DV12) focuses on the essentials: long air retention, a wide size range, and high reliability. Unlike particularly lightweight or specialized tube solutions, it is a standard version made of butyl. Thus, the DV12 is aimed at riders looking for a straightforward and proven bicycle tube for their compatible 26-inch bicycle.
5. Why choose the Schwalbe Tube 26" No.12 (DV12)?
   The Schwalbe Tube 26" No. 12 (DV12) is a standard bicycle tube made of butyl for compatible bicycle tires of the 26-inch class. It targets riders seeking a reliable tube with good air retention and a Dunlop valve. The tube covers several ETRTO tire sizes and features a 40 mm long DV valve. Its uniform wall thickness and material quality support above-average air retention. With 140 g weight, the Schwalbe No. 12 is designed for reliable everyday use.

Our Conclusion

• ✅ Ideal for: 26-inch bicycles within the specified ETRTO sizes
• ✅ Especially practical: wide application range across various tire dimensions
• ✅ Strength: above-average air retention
• ✅ Suitable for you: if your rim supports a Dunlop valve with 40 mm valve length
• ⚠️ Less suitable for: tires outside the listed ETRTO sizes or rims that require a different valve type

Scope of Delivery

• 1 × Schwalbe Tube 26" No. 12 (DV12)