Thursday, September 2, 2021

Tire Valve Stem

We just learned about the Tire Tread.

Another Tire Valve Stem.

This is the part that sticks out from the side of the tire, that you use to fill it up with air.

In the old days there used to be an inflatable tube inside called an inner tube, kind of like a pool floatie, and the valve stem would be part of that.
Now these days tires don't have an inner tube, so that is just part of the outside of the tire.

When you push down on the little metal post inside the tire it opens up the valve and lets air out, or lets you pump air in.
This type of valve is called a Schrader valve named after the person who invented it.

(from: wikipedia - valve stem)

Kid Facts - Blast from the past: Air Brakes