Laminar Pte Ltd Singapore

Laminar Pte Ltd

Pipe Solutions

Valve Positioners

Group 1 1
Group 1 1

Description

Valve positioners are essential components in control valves that ensure accurate and reliable control of air load pressure, directing the actuator to reach a preset position in response to signals from process instrument controllers. 

They are typically mounted on the side yoke or top casing of linear sliding stem control valves and use a mechanical feedback linkage to provide feedback to the controller. The high gain amplifier, which can be pneumatic or electro-pneumatic, and the feedback link work together to detect the valve’s actual position and ensure it moves to the desired position. 

Valve positioners can operate even in harsh working environments with innovative and robust coil modules. They are designed for easy field installation, and the base unit can be reconfigured to accommodate changes in your control needs, protecting your investment. 

Overall, valve positioners are an excellent choice for anyone looking for smart performance and reliable control of their control valves.

Features

  • Modular and quick auto-calibration
  • Detecting RA (reverse acting) or DA (direct acting) automatically regardless of wrong air connections
  • Available to use for single or double acting without any special adjustments
  • Compact design, which makes it suitable even for small actuators
  • Providing error messages against performance failures
  • Possible to test the actuator with any fixed signal under a test mode
  • Programmable characteristic curve with 17 points
  • Wide operating temperature range -40 ~ +80℃
  • Improved control of high-friction globe and ball valves.
  • Low air consumption
  • Providing a mounting bracket to meet IEC 60534-6-1 for linear valves

Option

  • Output position transmitter (4 – 20 mA)
    – 2 x alarm limit or micro switch (SPDT)
  • By-pass (Auto / Manual screw)
  • Intrinsically safe Ex ia IIC T6/T5
  • HART communication
  • Profibus PA communication
  • Fieldbus FF communication
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