Tire Air Valve Types

Valve stem type direct tpms.

Tire air valve types.

These tire valves are commonly used as replacements for leaky. Tire valve stems fit into wheel rims to allow air to pass into tires for inflation. Despite what most assume valve caps do serve a purpose depending upon the valve. Also called wheel valve stems tire valves have a tube like body with an inner core that seals the valve.

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. If that seal ever fails and you re losing air you can just replace the valve. Usually valve caps are used on a car or bicycle tire. 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.

Valve caps keep air from escaping your tire they are the second backup seal that prevents tire pressure loss. They typically include a cap for covering the valve to block out debris and moisture. 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. Because a valve cap has nothing to do with actually sealing the air inside a tire many wonder why companies use them.