Perfect automation of valves from 1″ – 60″


Fahlke PAZ® pneumatic actuators offer quality and reliability made in Germany. Automation requirements are perfectly met, thanks to the large line of Fahlke PAZ® actuators with more than 250 operating cylinder variants. All Fahlke pneumatic actuators are maintenance-free and waterproof in accordance with IP68.

Our actuator cylinders offering maximum quality. They are completely welded, honed, nickel-plated and thus absolutely maintenance-free. Cylinder leakage problems resulting from tie rods that have become slack, bolts or similar problems, which occur with other constructions, can be eliminated. The PAZ® actuator offers a special adaptor system which makes mounting on any valve a simple and quick task. The PAZ® is also available as a regulating actuator (PAZ-R®) and a safety shutdown valve (SSV) and can of course be supplied with a pressure reserve tank, hand pump unit as well as spring opening or closing for emergency actuation.

PAZ® in detail

Technical data

  • Double-acting (failsafe close / failsafe open / fail in position)
  • Spring force return (failsafe close / failsafe open)
  • Control cabinet of mat. 1.4301 (IP65)
  • Connection terminal box (IP65)
  • Air connection and shut-off valve of mat. 1.4571
  • Maintenance unit consisting of filter, oiler and pressure regulator
  • Stainless steel pressure gauge
  • Solenoid valves: 24 V DC or according to customer specification
  • Pipework and Swagelok fittings: mat. 1.4571
  • Terminal box for heating and solenoid valve (Ex de)
  • Actuator/gear protection class: IP68
  • Signalling of the end positions (open/close)
  • Temperature range: -60°C to +70°C


  • Functions: Emergency shutdown (ESD) / Safety shutdown unit (SSV) / Regulating
  • Pressure monitoring (high pilot and/or low pilot)
  • Pressure reserve tank for up to three reserve actuator strokes
  • Selection switch for local or remote control
  • Line break detection (pneumatic/electronic)
  • Partial stroke test (PST)
  • Control cabinet with thermal insulation
  • Heating, thermostat-controlled: 100 W, 230 V AC
  • Galvanic separation from the cathode-protected pipeline
  • Profibus DP or Modbus interface, o.a.

Available torque range

Our double-acting pneumatic actuators are available for torques from 20 Nm to 1,200,000 Nm.


Our spring-return pneumatic actuators are available for torques from 20 Nm to 1,000,000 Nm.


* others on request