The technical specifications in my water project call for butterfly valves operating with manual hand wheel actuators, BUT valves shall have provision for electrical actuators . my concern is about the provision for electrical actuators ???? I need to know if all butterfly valves can be connected to electricl actuator or this is something optional and we need to ask the manufacturer for ,so as to manufacture the valve to match and to be compatible with electrical actuators ?Most brand off butterfly valve can be adapted to have actuators Pneumatic/Electric or Hydraulic. Check what standard are used for the Valves mounting Flange arrangement and Shaft Dimensions and if your brand of actuator conforms to the same Standard then is should b e straight foreward if not an adaptor kit will be requited .Electric actuator can be purchased complete with Manual Over ride gearboxes. So the should really not be a problem Speak to your Valve and Actuator suppliers they should be able to guide you.

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