The Festo DFPD series features a rack and pinion combination with a constant torque characteristic across the entire swivel range.
The Festo DFPD quarter-turn actuator series is modular and built for maximum flexibility for a wide range of applications and operating conditions in process automation. DFPD actuators come in single and double acting versions. They can be paired with ball valves, butterfly, and shutoff valves. The DFPD is made for a variety of industries including chemical, biotech/pharma, water/wastewater and beverage with all models boasting excellent corrosion resistance. The basic DFPD is suitable for operating in temperatures between -20ºC and +80ºC, but the many variants in the series also include a low-temperature model (for operating conditions -50ºC to +60ºC) and a high temperature one (0ºC to +150ºC). Other variants also include epoxy coated as well as NPT thread and 180º swivel angle versions. Both versions feature a rack and pinion combination with a constant torque characteristic across the entire swivel range. The DFPD’s spring design can be configured in increments of 0.5 bar (7 PSI). Different spring combinations make it possible to achieve precise operating pressure requirements between 2 and 6 bar.