The Schrader Valve was invented by August Schrader and is used on all automobiletires and lower pressure bicycle tires. Higher pressure bicycle tires use the Presta valve. Schrader valves are also used on the fuel rail of some direct fuel injectionengines and on some automotive air conditioning systems to allow recharging with Freon. Download high resolution version (1632x1232, 726 KB)A schrader valve on a bicycle File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Download high resolution version (1632x1232, 726 KB)A schrader valve on a bicycle File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... This racing bicycle is built using lightweight, shaped aluminum tubing and carbon fiber stays and forks. ... Firestone tire A tire (U.S. spelling) or tyre (UK spelling) is a roughly toroidal piece of material placed on the circumference of a wheel, either for the purpose of cushioning or to protect the wheel from wear and tear. ... August Schrader was an enterprising German immigrant who set up a shop dealing in rubber products in Manhattan. ... A small variety of cars, the most popular kind of automobile. ... Firestone tire A tire (US spelling) or tyre (UK spelling) is a roughly toroidal piece of (usually) rubber placed on a wheel to cushion it. ... This racing bicycle is built using lightweight, shaped aluminum tubing and carbon fiber stays and forks. ... The Presta valve is a valve (commonly) found in high pressure road style bicycle tyres. ... Fuel Injection is a method to precisely meter fuel into an internal combustion engine, where the fuel is then burned in air to produce heat. ... An engine is something that produces some effect from a given input. ... Note: in the broadest sense, air conditioning can refer to any form of heating, ventilation, and air-conditioning. ... Freon is a trade name for a group of chlorofluorocarbons used primarily as a refrigerant. ...
Like the Presta valve, it uses air pressure inside the tire to keep the valve shut, but it adds a spring to assist in keeping the valve shut (especially important as the pressure decreases). That it is also bigger in diameter than the Presta valve makes it ideal for higher quantities of air at lower pressures, while the Presta valve is suited more to lower amounts of air at higher pressures. Carl Larsson, VÃ¥ren, 1907 Spring is one of the four seasons of temperate zones. ...
Schradervalves are also used on the fuel rail of some direct fuel injectionengines and on some automotive air conditioning systems, in a diameter larger than those used on tires, to allow recharging with refrigerant.
The Schradervalve stem is recessed, lacks the locking nut and normally uses a spring to help keep it closed.
There is a common misconception that Presta valves are better for the higher pressures used in high performance bicycletires, but Schradervalves are used in many high pressure industrial applications, as well as high pressure bicycle suspension systems.
In the photo to the left are two different types of Schradervalve cores, a "long" core which has a relatively large exposed spring, and a "short" one with an internal spring that isn't visible.
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