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Pneumatic rack and pinion actuators for valve controls of water pipes. A pneumatic actuator mainly consists of a piston or a diaphragm which develops the motive power. It keeps the air in the upper portion of the cylinder, allowing air pressure to force the diaphragm or piston to move the valve stem or rotate the valve control element.
DVD drive with leadscrew and stepper motor. Floppy disc drive with leadscrew and stepper motor. A linear actuator is an actuator that creates linear motion (i.e., in a straight line), in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals ...
Air (or other gas) pressure is the power source for pneumatic valve actuators. [1] They are used on linear or quarter-turn valves. Air pressure acts on a piston or bellows diaphragm creating linear force on a valve stem. Alternatively, a quarter-turn vane-type actuator produces torque to provide rotary motion to operate a quarter-turn valve.
Damper (flow) Opposed blade dampers in a mixing duct. A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature ...
Actuator. An actuator is a component of a machine that produces force, torque, or displacement, usually in a controlled way, when an electrical, pneumatic or hydraulic input is supplied to it in a system (called an actuating system ). [ 1] An actuator converts such an input signal into the required form of mechanical energy.
The Siemens SD-100 and SD-160 are two related types of high-floor light rail vehicles (LRV), manufactured by Siemens Mobility for the North American market. A total of 431 vehicles were built by Siemens in Florin, California from 1992 to 2013. The SD-100 began production in 1992, and is equipped with direct current traction motors and folding ...
Pneumatic cylinder, also known as air cylinder, is a mechanical device which uses the power of compressed gas to produce a force in a reciprocating linear motion. [ 1]: 85. Like in a hydraulic cylinder, something forces a piston to move in the desired direction. The piston is a disc or cylinder, and the piston rod transfers the force it ...
Siemens Factory and Ravensbrück concentration camp. Siemens exploited the forced labour of women deported to the Ravensbrück concentration camp; a Siemens factory was located in front of the camp. [23] During the final years of World War II, numerous plants and factories in Berlin and other major cities were destroyed by Allied air raids. To ...