This is a high-power pneumatic actuator in Scotch Yoke version (Single acting (SR) with spring return). Supplied in anodised aluminium with breakaway torque 720 Nm at 5,6 bar. ISO 5211 mounting flange F14, square shaft 30 x 30 mm. NAMUR recess for direct mounting of a solenoid valve.
Scotch Yoke - high torqueThe Scotch Yoke geometry provides high torque at the beginning and end of the stroke - ideal for heavy butterfly valves and large ball valves.
Single acting (SR) with spring-returnAir pressure opens the actuator; the spring pack closes fail-safe in case of pressure loss - suitable for safety-critical applications.
ISO 5211 F14Can be mounted directly on large Omal ball valves and butterfly valves with a matching F14 flange. Square shaft 30 x 30 mm.
NAMUR solenoid valve connectionStandard NAMUR pattern on top - direct mounting of Omal or universal 3/2 or 5/2 solenoid valves.
Mount the SR720401 directly on the drive side of the valve with an ISO 5211 F14 flange and a square shaft 30 x 30 mm. Connect the compressed air to the correct port: for DA on both ports (open and close), for SR only on the open port (air opens, spring closes). Standard working pressure 5,6 bar; at lower pressure, the breakaway torque decreases linearly. For ATEX applications: request the ATEX version with the corresponding certification.
