Quarter-turn actuator, single-acting, spring return, flange F16, ATEX DAPS-1440-090-RS4-F16 - Festo 549688

The actuator DAPS-1440-090-RS4-F16 opens the valve pneumatically and closes it by spring force, even if the air supply fails. Spring strength 4 provides a return torque of 960 Nm at 0° and 1440 Nm at 90°, mounting is via flange F16 to ISO 5211.

Benefits

• Spring return torque 960 Nm at 0°, 720 Nm at 50° and 1440 Nm at 90° (spring strength 4, rated for 5.6 bar supply pressure)
• Pneumatic torque at 5.6 bar: 1440 Nm at 0°, 960 Nm at 90°
• Flange hole pattern F16 to ISO 5211, shaft connection T46 with 49.5 mm depth
• NAMUR valve interface to VDI/VDE 3845 for direct mounting of a solenoid valve
• ATEX II 2G and II 2D, type of protection Ex h IIC T6...T3 Gb X
• Usable in SRP/CS up to SIL 2, low demand and high demand

Applications

Automating ball valves, butterfly valves and other quarter-turn valves in process plants, including hazardous areas. Operating pressure 5.6 to 8.4 bar, air consumption 77 l per cycle at 6 bar.