Tire Air Valve Types

Usually valve caps are used on a car or bicycle tire.

Tire air valve types.

Also called wheel valve stems tire valves have a tube like body with an inner core that seals the valve. A valve cap is the plastic cap that screws over a valve. If that seal ever fails and you re losing air you can just replace the valve. Presta valves for tubeless tires seal by a knurled nut that fixes the valve to the rim.

Rubber snap in high pressure snap in and high pressure metal clamp in it s the vehicle required tire inflation pressures driving conditions and wheel design that dictate which type of valve is appropriate for the application. These tire valves are commonly used as replacements for leaky. Because a valve cap has nothing to do with actually sealing the air inside a tire many wonder why companies use them. They typically include a cap for covering the valve to block out debris and moisture.

Located on the back of the valve stem direct tpms systems use four tire pressure sensors and a receiver to monitor and relay information about air pressure temperature location and battery charge to the ecm the ecm decodes this data illuminating the tpms warning light when one or more tires are significantly under inflated. The three types of tire valve caps that you ll most commonly encounter are plastic dome used for everyday driving metal dome used for racetrack driving and metal screwdriver used for removing and inserting valve cores. Valve caps keep air from escaping your tire they are the second backup seal that prevents tire pressure loss. Despite what most assume valve caps do serve a purpose depending upon the valve.