control valves

Different types of control valve actuators

Introduction Pneumatically operated control valve actuators are the most popular in use, but electric, hydraulic and manual Actuators are also widely used. The pneumatic spring and diaphragm actuator is most commonly specified due to its reliability and simplicity of design. Pneumatically operated piston actuators provide high stem output power for demanding service conditions. The adaptations …

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what are ball valves?

Introduction A ball valve is a rotational motion valve .The ball consists of a ball shaped disk .this ball shape disk rotates to stop or start flow. The ball has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur.The ball …

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How a Globe valve works?

Introduction A globe valve is a linear motion control valve. With globe valves we can start, stop and regulate the flow of fluid. The globe valve disk can be totally removed from the flow path or it can completely close the flow path. Working principle   When the valve is actuated to open the disk …

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