Since the early days of gas transmission pipeline valve automation, shutdown valve actuators have been powered using energy from the pipeline fuel gas pressure. As these pipeline valves are often remotely located, alternative power supply options to operate the valves are limited. However, the challenge with using pipeline fuel gas to power a valve actuator is that the spent gas is then exhausted to the atmosphere. As methane emissions contribute to global warming, there is an ongoing push to move towards greener technology. It is therefore vital that new technology adopted for both new construction and existing pipeline modernization be focused on mitigating emissions.
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