Festo DFPD Series 8 bar Double Action Pneumatic Rotary Actuator, 90° Rotary Angle, 20mm Bore

Festo DFPD series quarter-turn rotary actuators feature a rack and pinion combination with a constant torque characteristic. The modular and compact design of the DFPD series allows various spring configurations as a suitable solution for different applications. They are the perfect solution for automating your butterfly valves, ball valves and air shut off valves. This range is also suitable for water/wastewater, beverage, pharmaceutical and process automation.

• Uniform torque characteristic across the entire rotation angle of 90° with the double-acting version
• Version with swivel angle 120°, 135°, 180° for the sizes 40, 120, 240, 480, double-acting
• Process valve connector according to ISO 5211
• Mounting hole pattern to VDI/VDE 3845
• Sturdy, non-slip, and easy-to-clean aluminium housing
• Long service life, low wear
• Increased corrosion protection
• Single and double acting options
• Port pattern to NAMUR VDI/VDE 3845 for mounting solenoid valves, position sensors and positioners

Quarter turn rotary actuators are components that are operated by compressed air which produces a rotary motion via a shaft to control the speed and rotation of attached equipment. In this scenario, the rotary actuator will turn a quarter when rotating.

This pneumatic rotary actuator is a compact solution for varying automation needs, specifically engineered for double action. With a 20mm bore and capable of a 90° swivel angle, this actuator ensures reliable performance in demanding industrial environments. It meets the highest standards of functionality and safety, making it ideal for various applications.

• Designed with a rack and pinion mechanism for reliable performance
• Optional mounting positions enhance installation flexibility
• Robust build with anodised aluminium and stainless steel components
• Effectively operates within a temperature range of -20°C to +80°C

• Used for valve automation in various industrial settings
• Ideal for systems requiring precise angle positioning
• Suitable for in environments with explosion hazards
• Effective in sites needing high-performance pneumatic drives

The actuator is designed with explosion protection certifications for both gas and dust, allowing safe use in Zone 1, complying with ATEX and UKEX standards. Its ignition protection types ensure functionality without risk in hazardous atmospheres.

It operates efficiently within a pressure range of 2 bar to 8 bar, with a nominal operating pressure of 5.5 bar. Additionally, maintaining the medium’s dew point at least 10°C below ambient temperature is advisable for optimal performance.

Yes, it supports low demand mode up to SIL 2 and high demand mode up to SIL 1, with the capability to operate in redundancy for SIL 3, making it suitable for various safety protocols.