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The Schrader valve is used on virtually all automobile tires and motorcycle tires and most wider-rimmed bicycle tires.In addition to tube and tubeless tires, Schrader valves of varying diameters are used on many refrigeration and air conditioning systems to allow servicing, including recharging with refrigerant; by plumbers conducting leak-down pressure tests on pipe installations; as a ...
Around 1890, after reports of English cyclists' 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 used today. August's son, George, is generally credited with the experimental work that resulted in the valve's creation.
Presta valves (also called Sclaverand valves or French valves) are normally only used on bicycles. The stem has a narrower diameter (nominally 6 mm) than the thinnest (nominally 8 mm) Schrader type, and so the bore of the hole in the rim through which the stem passes can be smaller. Has a locknut that needs to be opened to inflate/deflate. [17 ...
A service valve is a valve used to separate one piece of equipment from another in any system where liquids or gases circulate. [1] Two types of service valves are marketed: the Schrader-type valve and the stem-type service valve. [ 2 ]
A modified Schrader valve - with a floater - is used in self-acting vents on the very top of pipes. Via Schrader valves cooling medium is filled into the air conditioning of cars, small powder fire extinguishers are filled with nitrogen or pressure-checked. --Helium4 08:47, 8 August 2010 (UTC)
The blue valve body is visible in-line with the pipe. The valve actuator opens or closes the butterfly disc of the valve based on electrical signals sent to the actuator. Another valve actuator is visible in the background, with windows to indicate the valve position. A valve actuator is the mechanism for opening and closing a valve. Manually ...
A Presta valve has a nut holding the valve closed, but this is not an advantage in practice, as ordinary bicycles never go fast enough to open a Schrader valve. Further, at least some motor-paced speed record bicycles have used Schrader valves. (The actual speed of Schrader opening depends on many factors; 150 kph is only a very rough guide.
A vacuum delay valve is a valve with a small orifice, which delays a vacuum signal. These are commonly used in automobiles to alter the behavior of vacuum switches , vacuum motors , and other vacuum devices.
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