Pneumatic Actuators

Aluminum pneumatic Actuators atex
Ex II2 G/D

TUNING pneumatic actuators, available in both double acting and spring return versions, are reinventing the design of pneumatic actuators throughout the industry. Our high quality actuators are the ideal blend of durability and innovation, at an economical price. They are designed and manufactured in Europe according to CE and ISO 9001 procedures and certified ATEX. Each actuator is fully tested at production time and before delivery



1. Actuator body
Extruded Aluminum Alloy ASTM6005 body is hard anodised to protect the internal and external components against corrosion, which reduces the friction on moving pistons and extends the life cycle of the actuators. Alternative coatings are available such as ENP (Electroless Nickel Plating) of PFA for more aggressive environments. The body is drilled on the top side according to the VDI/VDE 3845 norm and with a double ISO 5211 pad on the bottom part

2. End caps
Die-casted aluminum end caps are primarily Alodine Cr+6 coated which provides longer life cycles and protection against corrosion and better wearing resistance. Secondary standard coating is powder polyester coating. ENP and PFA coatings are also offered as an option for agressive environments.

3. Pistons
Die-casted aluminum twin rack pistons are coated withalodine Cr+6. It ensures longer life cycles and protection against corroion and better wearing resistance. Pistons are identical on both sides allowing for reverse rotation simply by inverting the pistons.

4. Pinion (Drive Shaft)
Alloy steel pinion is electroless nickel plated in order to reduce the friction, provide maximum wear resistance and protection against corrosion under severe conditions. As an option, we offer AISI304 pinion. The top part of the pinion conforms to NAMUR norm. Double square (star shaped)
5. Travel Adjustment
Bi-directional external travel stop adjustment bolts can adjust the position + or - 5° between 85° to 95° in both opening and closing directions for accurate valve alignment. 0-90° full scale limit position adjustment can also be offered optionally.

6. Preloaded Springs
Cartridge design in high grade coated steel springs provide great safety and corrosion resistance in fail safe and emergency shut down operations.

7. Indicator
All actuators are equipped with a regular position indicator showing the current state of the actuator and valves.

8. Bearings & Guides
Low friction piston guides and bearings provide high thrust and stability during operation of actuator.

9. Seals
NBR rubber O-rings provide trouble freee operation at standard temperature ranges between -20°C to +80°C temperature ranges. For high and low temperature applications, FKM (-20°C to +150°C) and Silicone (-35°C to +80°C) seals are available as an option.

10. Fasteners
Stainless steel A2 fasteners for long life corrosion resistant application.

11. Traceability
Each actuator is assigned a unique manufacturing lot number allowing full traceability.