KDL series linear actuators are high performance. high thrust diaphragm actuators of multi-spring type that are compact and light. When diaphragm actuator is pressured by supply air,the force is created to move the rod of the actuator to a balanced position which the force of diaphragm pressure is equal to the spring force, unbalance force of valve trim, and friction force etc. For linear travel control valve or other linear travel equipments,KDL series actuators are suited for control and on-off.
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