Marsh Automation Pvt. Ltd. Manufactures Electric Actuators for Various Types of Valves. Marsh Automation Pvt. Ltd. Is an ISO 9000 accredited company. The company manufactures Electrical Activators Motorized Valves, Pneumatic Valves, Electrical or Pneumatic Actuators. The Electric Actuators for Various Types of Valves are most suitable for control or regulating duty applications of various types of valves such as Globe, V-notch ball, butterfly, diaphragm and single or multi louver dampers. The actuators are supplied with various types of accessories and can directly work on the control signal of 4-20 mA and also give feed back signal of 4-20 mA with respect to the actual mechanical position of the final control element.