Air TOrque

Air Torque Pneumatic Actuators

Range and Options

The PT Series pneumatic actuators are available in:

• Eighteen models

• Spring return and double acting versions

• Torque up to 10.000 Nm / 88.500 Lb-In

• Six different protection levels

• Low and high temperature constructions

• Large availability of many ISO flanges and drive shaft connections for direct valve automation

Alodur Hard Anodized Body

Extruded aluminum body with Alodur special hard anodization applied internally and externally for a complete corrosion protection, a lower friction coefficient and an increased surface hardness for the longest wearing resistance. Additional protective coatings are available on the external surface for different environmental working conditions.

Pistons design

Dual piston rack and pinion design for compact construction, symmetric mounting position, high-cycle life and fast operation, reverse rotation can be accomplished in the field by simply inverting the pistons. Both pistons are anodized for a better corrosion andwearing resistance.

Two independent external travel stop adjustments

As a standard, travel stops allowing adjustment for – 5° up to +5° on the close position, and for + 5° up to -5° on the open position. This allows

accurate valve alignment.

Universal and anti-blowout drive shaft

Integral drive-shaft is available with double square as standard to permit versatility, lower and more flexible inventory. Others connections are available on requests.

One compact and unique design

With identical body and end caps for double acting and spring return model to reduce inventory, allows field conversion, by adding or removing modular spring cartridge.

Position indication

As standard actuators are supplied with a position indicators for a visual indication of actuator/valve position. Other types of position indicators suitable for direct mounting of sensors (P+F, IFM, etc.) and mechanical limit-switches available on request.

Multiple bearings and guide

Bearings on piston and racks for precise operation, low friction, high cycle life and piston guides preventing shaft blowout.

Modular preloaded spring

Cartridge design in high grade coated steel for simple range versatility, greater safety and corrosion resistance.

Hardened Surface on Drive-shaft

Surface hardened and protected against corrosion with nickel plating or hard anodizing, Blow-out proof, bearing guided for improved safety and maximum cycle life.

Fully Machined Teeth

On piston racks and pinion shaft for accurate positioning, low backlash and maximum engagement resulting in overall efficient operation.

Selected and High-Quality bearings and Seals

Provide a wide operating temperature range, low friction and high cycle life.

Fasteners

Stainless steel fasteners for long term corrosion resistance.

Full Compliance

ATEX 2014/34/EU, DNV Type Approval, SIL3, IP67 & IP68 protection.

Actuator Marking Traceability

Each actuator is marked with detailed information regarding product description, connections and working conditions; furthermore, each individual actuator is produced with a serial number for full traceability.