Continental 28 All Valve Presta 32/47-609/642

The Continental 28 All Valve Presta 32/47-609/642 is a 28-inch bicycle inner tube with a Presta valve, designed for city, trekking, hybrid and other everyday bicycle tyres.

Key Features

Construction and Design

The tube is made from flexible butyl rubber, providing reliable air retention and durability under normal riding conditions. Its vulcanised construction helps maintain an even shape and a secure connection around the valve area.

Main Functions

The tube maintains the required air pressure inside the tyre and can replace a worn or punctured inner tube. It is designed for tyres measuring 32–47 mm in width and rims with an ETRTO diameter between 609 and 642 mm.

Use and Compatibility

The tube fits many 28-inch city, trekking, hybrid and electric bicycle tyres marked with ETRTO sizes from 32-609 to 47-642. The narrow Presta valve is intended for rims with a smaller valve opening and can be inflated with a compatible bicycle pump.

Additional Features

The broad size range allows the same tube model to be used with several different tyre widths. Before installation, check the ETRTO size marked on the tyre, inspect the rim tape and remove any sharp objects from inside the tyre.

Summary

The Continental 28 All Valve Presta is intended for cyclists who need a versatile 28-inch inner tube with a narrow Presta valve. Its butyl rubber construction and compatibility with 32–47 mm tyres make it suitable for everyday city, trekking and leisure riding.