KSB AG Single-acting Pneumatic Actuator DYNACTAIR

Design Single-acting pneumatic actuator for mounting on quarter-turn valves (butterfly valves or ball valves). Top flange to ISO 5211. Control pressure up to 8 bar. Can be mounted on various types of valvestem ends (square end, flat end or key). Force transmission via rack-and-pinion, scotch-yoke or patented Amri yoke kinematics provides output torques of up to 8000 Nm which are ideal for actuating quarter-turn valves. Reset to fail-safe position is effected by means of spring assemblies if control air supply is interrupted. DYNACTAIR is equipped with a visual position indicator and adjustable travel stops for open/closedposition as standard. Manual override can be provided on request (up toDYNACTAIR 100). For automated valve actuation, DYNACTAIR can be combinedwith AMTROBOX, AMTRONIC, SMARTRONIC or any other control unit with VDI/VDE 3845 interface Applications All applications in water, energy and industrial engineering. Overview of technical data Actuator effect Single- acting Manual override for actuator Yes Type of control Continuous- action actuation Actuator movement Rotation Max. perm. temp., control press. medium 80 °C Min. control pressure 3 bar Actuator closing time 0 s Max. torque 8 002 Min. ambient temperature, actuator 80 °C Ambient temperature, actuator 20- °C Actuator limit switch Yes Actuator position feedback Yes Face-to-face length 0 mm Max. closing force [N] 0. 00