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Expert Valve Positioner Manufacturers

IMI Critical is an industry-leading valve positioner manufacturer. A valve positioner is used on an actuator (hydraulic or pneumatic) to provide feedback to the controller in response to the required and actual movement of the valve stem. This ensures the valve responds to system requirements. IMI STI actuator positioners, such as FasTrak, are high-capacity, high-precision, digital-pneumatic valve controllers that replace a conventional positioner with excellent dynamic performance and high flow. These pneumatic valve positioners are compatible with double and single-acting actuators, with or without a spring, piston or diaphragm.​

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