Quarter-turn actuator, single-acting, spring return, flange F25, ATEX DAPS-4000-090-RS4-F25 - Festo 561696

The actuator DAPS-4000-090-RS4-F25 opens the valve pneumatically and closes it by spring force, even if the air supply fails. Spring strength 4 provides a return torque of 2666 Nm at 0° and 4000 Nm at 90°, mounting is via flange F25 to ISO 5211.

Benefits

• Spring return torque 2666 Nm at 0°, 2000 Nm at 50° and 4000 Nm at 90° (spring strength 4, rated for 5.6 bar supply pressure)
• Pneumatic torque at 5.6 bar: 4000 Nm at 0°, 2666 Nm at 90°
• Flange hole pattern F25 to ISO 5211, shaft connection T55 with 58 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

The DAPS-4000-090-RS4-F25 sits on water, wastewater and process valves with flange F25. It works at 5.6 to 8.4 bar and uses 203.7 l of air per switching cycle at 6 bar.