you will learn how to set the end stops on a spring-return fail-close scotch-yoke valve actuator to ensure that a ball valve can fully open and close.
The principles shown in the video are also applicable to spring-return fail-open and double-acting scotch-yoke valve actuators; however, please note that whatever type of scotch-yoke valve actuator, its open end stop must be set first as its position will be needed to set the actuator’s close end stop position.
A valve for filling processes is mostly exposed to very high switching cycles. The wearing parts, above all the diaphragm, are subjected to extreme mechanical loads. The GEMU 660 diaphragm valve has been specially designed for fast and high pulse frequencies and therefore has a closing limiter (travel stop) and opening limiter as standard. The travel stop can be used to adjust the closing force to the existing operating pressure. This means that the diaphragm is not exposed to the highest closing force of the actuator for every closing movement. The opening limiter is used to set the opening stroke. This limits the required volumetric flow. This optimizes the mechanical stress of the diaphragm at the same time, results in a longer service lives, longer maintenance intervals, and increased operational safety. This video shows how to set the closing and opening limiters on pneumatically operated diaphragm valve.
you will learn how to set the end stops on a spring-return fail-close scotch-yoke valve actuator to ensure that a ball valve can fully open and close.
The principles shown in the video are also applicable to spring-return fail-open and double-acting scotch-yoke valve actuators; however, please note that whatever type of scotch-yoke valve actuator, its open end stop must be set first as its position will be needed to set the actuator’s close end stop position.
A valve for filling processes is mostly exposed to very high switching cycles. The wearing parts, above all the diaphragm, are subjected to extreme mechanical loads. The GEMU 660 diaphragm valve has been specially designed for fast and high pulse frequencies and therefore has a closing limiter (travel stop) and opening limiter as standard. The travel stop can be used to adjust the closing force to the existing operating pressure. This means that the diaphragm is not exposed to the highest closing force of the actuator for every closing movement. The opening limiter is used to set the opening stroke. This limits the required volumetric flow. This optimizes the mechanical stress of the diaphragm at the same time, results in a longer service lives, longer maintenance intervals, and increased operational safety. This video shows how to set the closing and opening limiters on pneumatically operated diaphragm valve.
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