Valve testing device that avoids plant downtime
May 1st 2004

The new Stroke-Test from Smith Flow Control is a device that allows the testing of critical valves without shutting down the process flow. This ensures the revenue stream is not interrupted, while also ensuring plant operators comply with industry safety standards.

The system operates on the principle of valve partial stroke testing, that allows a safety system to close a valve only partially. So, when a Stroke-Test is fitted to a valve, it limits the movement of the actuator to within pre-set travel limits, for example 20. This means all valve control elements, such as solenoids, positioners and relays are tested without the valve having to fully close. The flow coefficient is not significantly affected and process flow continues.

The device is easy to install and operate and does not need to be integrated into the control loop.

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