APEX 4000 Positioner

The Apex 4000 Pneumatic Positioner provides accurate valve positioning for rotary and linear actuators in either double acting or spring return configurations. It may be used with 3-15 psi pneumatic control signals, or fitted with current-to-pressure transducers for 4-20 mA signal inputs. The modular design of the Apex 4000 allows for field retrofitting of the I/P options. The Apex 4000 is available with the following options: high and low flow spool valves and multiple feedback cams. including: Rack-and-pinion, Scotch Yoke, Vane, and others. The Apex 4000 is equally well suited for use with pneumatic linear actuators and cylinders. The Apex 4000 may be installed on any actuator conforming to the NAMUR standard for accessory mounting bolt pattern and pinion height without a coupler. This reduces deadband and is less expensive. Automax offers a full line of mounting hardware for non-NAMUR actuators. Durable construction and corrosion resistant materials and coatings provide protection against the toughest applications in all process industries,

The compact, lightweight positioner also conforms to NAMUR VDI/VDE 3845 mounting standards and features a low profile visual position indicator.

Two spool valve options make the Apex 4000 well suited for use with all pneumatic rotary actuator types


  • Corrosion Resistant Materials. All exposed parts are either stainless steel or epoxy powder coated
  • Captive Cover Screws permit calibration without potential for losing screws.
  • Field Upgradeable. The Apex 4000 is field upgradeable to any of the electro-pneumatic I/P options
  • Compact, Sturdy Design has few moving parts, adding to its reliability and performance.
  • Low Profile Visual Position Indicator provides high-contrast viewing of valve position.
  • Quick and Simple Calibration is done with thumbwheels

Contact our Valve Specialist Team:

Brendan Merrigan (External) – Mob: 087 2598124                           

Internal Team

Brian Barry – Tel: 021 461 7211

Darragh Rodgers- Tel: 021 461 7241

Miriam Adair- Tel: 021 461 7235

Ross O’Donovan – Tel: 021 461 7230 

Shauna O’Connor – Tel: 021 461 7237

Tim Quigley – Tel: 021 461 7209

Vicki McGrath – Tel: 021 461 7207

Tel: 021 461 7200