The SD series manual override gearbox is an essential component of the automation control system, working in concert with the pneumatic actuator. The main objective of this device is to enable the smooth operation of butterfly valves, ball valves, piston valves, and other valves that require a 90° angular movement for opening and shutting. The SD series gearbox is designed for manual operation, but it can also be used in situations where manual drive is needed for automatic control systems and mechanical products.
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