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Inner Tube Valves: Comprehensive Guide to Schrader, Presta, and Dunlop
Three main valve types:
- Schrader (American): Common on bikes/cars; metal stem with center pin; opened by depressing pin.
- Presta (French): Thinner stem, smaller hole; common on high-performance bikes; opened by unscrewing knurled nut.
- Dunlop (Woods/Regina): Similar to Schrader but hole on side; found on older/children's bikes; opened by depressing center pin.
Less common types include Woods, Regina, Sclaverand valves on specialized/older bikes.
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