Quarter turn actuator DFPB for the process industry

Sturdy rack-and-pinion drive

For use in water and wastewater treatment plants

Benefits:

  • Maintenance-free: lower maintenance costs even in the event of strenuous applications
  • Long service life due to innovative, pressure-dependent lip seal
  • Auto-lubricating and optimum emergency operating characteristics thanks to carbon-impregnated slip bands (30% carbon)
  • Maintenance/repairs with only 1 Allen key: the seal can thus be replaced quickly and easily.
  • Clean Design without countersunk holes or edges for simple cleaning, even in areas exposed to splashing water
  • Clockwise and anticlockwise operation due to process valve connections on both sides to ISO 5211

 

Animation of quarter turn actuator DFPB

 

Technical data
Design Twin-piston cylinder according to the rack-and-pinion principle,
double and single-acting versions
Rotation angle Max. 94° (end-position adjustment with externally and internally sealed and encased lock nuts)
Torque
[Nm]
10 ... 300 Nm at 5.6 bar
2nd stage: 350 ... 1,050 Nm
3rd stage: 1,050 ... 8,000 Nm
Operating pressure
[bar]
1.0 ... 8 bar
Temperature range -20 ... +80 °C
Materials

Housing: Al wrought alloy
Bearing cap: Die-cast alloy

End caps: Al, epoxy-coated
Shaft: AI7075 anodised
Screws: A2
Seals: NBR

Corrosion resistance CRC3 to FN 940 070 Part 1