Bicycle Pump Valve Adaptor. Now you re going to cut the tip of the cap to make a nice adapter y shaped tube. So a bicycle tube with the schrader valve can be pumped up at your local gas station if no hand pump or co2 cartridge is available.

4 5 out of 5 stars 381. In this tutorial we ll learn how to use the adapter to inflate your tire. These bike adaptors are so light and can be left on the presta valve.
This is a type of positive displacement air pump whose small and lightweight design is specifically designed for inflating bike tires.
Free delivery with 45 order. Free delivery with 45 order. The presta valve is on the left. The first step is to remove the cap and then loosen the valve s locknut all the way counter clockwise.