Process Control Valves... 

Perfect Servo Valve - Pipeline Flow Control

Application

Controlling the flow rate of various refined products from a refinery to the end user.

Customer

Oil refineries, power generation and storage.

The Challenge

Current industry trends are to eliminate the use of hydraulics where possible to gain the benefits of simplified installation as well as reduced operating and maintenance costs offered with electric actuation.

The Solution

The Tritex II actuator operates a 6-inch Fisher globe valve, controlling the flow rate of various refined products from a refinery to the end user. Exlar actuators provided an economical alternative to the existing hydraulic actuators traditionally used for this application. Exlar actuators are unique in the process industry through the integration of electric servo motors and planetary roller screws typically used in the motion control industry.

Fully utilising the physics of power and motion of roller screws are unmatched at converting rotary torque into linear motion. Unlike acme or ball screws, roller screws are capable of carrying heavy loads and allowing rotational speeds in excess of 5000 rpm in the most arduous conditions. This makes roller screws integrated with servo motors the ideal choice for demanding, continuous‐duty final control element environments.

 

Explosion Proof

Long Life

Reduced Maintenance

Reduced Total Ownership Costs

Results

The Tritex Actuator series consists of both linear and rotary servo‐electric actuators, offering a unique combination of high speed, performance and accuracy, in a compact, lightweight package. The Tritex Actuator has speeds up to 25” per second, excellent position accuracy, and 100% continuous duty cycle. High performance is achieved with respect to speed, linearity, load sensitivity, deadband and temperature range.

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