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August Schrader (1807–1894) was a Germany inventor and mechanic. He is known for inventing the Schrader valve.
In 1845, he began supplying fittings and valves for rubber products made by the Goodyear Brothers, including air pillows and life preservers. He also made daguerreotype apparatus. Then he went into partnership with Christian Baecher, a brass turner and finisher.
After watching divers at work, Schrader sought to improve diving helmets. In 1849, he created a new copper helmet. Later, his interest in diving led to him to design an air pump.
Around 1890, after reports of England Cyclist success using pneumatic tires, August Schrader saw the need for a bicycle tire valve. By 1891 he had produced the Schrader valve, which was his most popular invention and is still used today on many bicycle tires.
August's son, George, is generally credited with the experimental work that resulted in the valve's creation.
The Schrader valve is used on virtually all tire, , , most wider-rimmed , as well as in almost all other pneumatic tires such as on and all-terraine vehicles.
In addition Schrader valves are used on many refrigerator and air conditioning systems to allow servicing, including recharging with refrigerant; by plumbers conducting leak-down pressure tests on pipe installations; as a bleeding and test port on the fuel rail of some fuel injected ; on bicycle air shock absorbers to allow adjustment of air pressure according to the rider's weight; for medical gas outlets within hospitals and some medical vehicles; and in the buoyancy compensator (BC) inflators of Scuba diving systems where the ability to easily disconnect an air hose (even underwater) without the loss of tank air is critical.
Schrader valves are also widely used in high-pressure hydraulic systems on aircraft.
In 1893, Schrader patented the tire valve cap.
In addition to the Schrader valve bicycles can come with Presta valve and Dunlop valve valves.
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