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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 ...
The Henry Pratt Company develops, manufactures and sells valves, valve actuators and control systems for use in potable water, wastewater, power, industrial, and nuclear applications. The company was founded in 1901 as a metal fabricating shop, and it designed and developed the first rubber-seated butterfly valve in 1926.
An automatic control valve consists of three main parts in which each part exist in several types and designs: Valve actuator – which moves the valve's modulating element, such as ball or butterfly. Valve positioner – which ensures the valve has reached the desired degree of opening. This overcomes the problems of friction and wear.
An actuator is a component of a machine that produces force, torque, or displacement, when an electrical, pneumatic or hydraulic input is supplied to it in a system (called an actuating system). The effect is usually produced in a controlled way. [1] An actuator translates such an input signal into the required form of mechanical energy.
Valve actuator; Adjustable pressure-limiting valve; Air-operated valve; Angle seat piston valve; B. ... Swirl valve; T. Tap (valve) Thermal expansion valve ...
Valve actuator; W. Wax motor; Wig wag (washing machines) This page was last edited on 17 December 2021, at 13:05 (UTC). Text is available under the Creative ...