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quarter turn actuator quarter turn actuator
quarter turn actuator quarter turn actuator


quarter turn actuator

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A quarter turn actuator, also known as a rotary actuator or a quarter-turn electric actuator, is an electric device used to control valves that require a 90-degree rotation to open or close. It is specifically designed for quarter-turn valves such as ball valves, butterfly valves, and plug valves.

The primary function of a quarter turn actuator is to receive electrical signals from controllers or other instruments and convert them into rotational torque or linear motion necessary for operating the valve. These electrical signals can be in the form of 4-20 milliampere (mA) current signals, voltage signals (such as 0-10V), or digital signals (such as Modbus or Profibus protocols).

Quarter turn actuators come in various types, including electric motor-driven actuators and electromechanical actuators. Electric motor-driven actuators typically use electric motors to generate the required torque for valve operation. Electromechanical actuators incorporate a combination of gears, crankshafts, and screws to convert linear motion into rotary motion.

These actuators provide accurate and reliable control of quarter-turn valves, allowing for precise regulation and automation in industrial processes. They are commonly used in industries such as oil and gas, water treatment, HVAC, and chemical processing, where efficient and automated valve control is necessary.
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