Biffi Hydraulic Actuators

Rotating and linear hydraulic actuators. Piston actuator for linear and 90° valves, in double acting and spring return editions.

On 90° valves from small actuators with 'rack & pinion' transmission to larger editions with 'scotch yoke' transmission. 
 
'Quick acting'(QA) option for less than one second operations.  
 
All Biffi actuators can be supplied in accordance with specifications from e.g. Statoil and ConocoPhillips.
 
 
 

Product Information

 

Biffi HLA & HLAS

Double acting and single acting linear hydraulic actuators - for ON/OFF applications and modulating service.
  • Electroless nickel plated and polished cylinder for corrosion resistance and minimal friction
  • Hard chromium plated and polished piston rod in stainless steel for corrosion resistance and minimum friction
  • Stroke adjustment with mechanical travel stop in one direction
  • Totally enclosed spring cartridge, for single acting version, preventing any damage to personnel during assembling or disassembling
Technical data:
  • Supply medium: mineral oil or synthetic fluids
  • Temperature range: from -30°C/+100°C
  • Applications: gate, globe valves
 
 


Biffi OLGA & OLGAS

 
Hydraulic actuators, 90° operation  - for on-off applications and modulating service (low pressure). Suitable for any quarter turn application such as ball, plug, butterfly valves or dampers.
  • Totally enclosed, weatherproof housing
  • Chromium plated and polished guide bar and piston rod
  • External travel stops for precise angular stroke adjustment between 82° and 98°

For more information on Biffi hydraulic low pressure actuators for linear valves, click here

 
 

Biffi OLGA-H & OLGAS-H

 
Hydraulic actuators, 90° operation for on-off applications and modulating service (high pressure). Suitable for any quarter turn application such as ball, plug, butterfly valves or dampers.
  • Totally enclosed, weatherproof housing  
  • Chromium plated and polished guide bar and piston rod
  • External travel stops for precise angular stroke adjustment between 82° and 98°
 
 

Biffi OLGAS-QA & ALGAS-QA, Quick acting actuators

Designed to meet the technological requests of advanced power plants with steam and gas turbines and compressors.

  • Spring return
  • Suitable for any quarter turn application, mainly for ball and butterfly valve in both ON/OFF and modulating heavy duty service
  • Quick-acting hydraulic and pneumatic actuators for linear valves are available on request.
Typical applications:
  • Conventional and geo-thermal power plants, advanced combined cycle plants appliccations
  • Steam turbine HP-LP feeding valves (trip and control)
  • Gas turbine feeding valves (trip and control)
  • Turbine by-pass valves
  • Compressor blow-off valves
  • Condensator water feeding valves
  • Boiler combustion control valves
  • Turbine and rocket engines test facilities
  • High pressure relief valves

For more information on Biffi Quick acting spring return actuators for 90° valves, click here

 
 

RPHD & RPHS

Hydraulic actuators, 90° operation  - for on-off applications and modulating service
  • Totally enclosed, waterproof housing
  • Compact 'rack and pinion' design
  • Supply medium: hydraulic oil or fire-resistant fluid
  • Max torque: up to 2600 Nm
  • Temperature range: -30°C/+100°C

For more information on small and medium size Biffi hydraulic actuators, click here