Exlar Tritex II DC valve actuators

Exlar Corporation has announced its line of Tritex II DC actuators is now CSA certified and in compliance with CSA 139 (Valve Actuator Standard). The actuators accommodate applications requiring CSA Class I, Division 2 Groups A, B, C and D certification - making them suitable for hazardous location operation.

The actuators integrate a servo drive, digital position controller, brushless motor and linear or rotary actuator in one compact, sealed package. Linear actuators employ Exlar’s inverted roller screw mechanism, seamlessly converting rotary motion into linear motion for sliding stem control valve applications. Rotary actuators are suitable for operating quarter-turn ball and butterfly control valves or shaft-driven dampers and can be mounted directly on the rotary valve, eliminating any linear to rotary conversion hardware.

The actuators overcome performance limitations common in traditional electric actuator technologies for process control applications. The actuators offer 100% continuous duty with life counts in the hundreds of millions of cycles, response times in milliseconds and accuracy of 0.10 percent of span. Capable of reaching speeds up to 63 cm/s and forces to 4.5 kN, the actuators virtually eliminate deadband and prevent stiction in the valve stem from causing operation malfunctions, even in continuous duty applications.