Control Valve Positioners

Azbil's Smart Valve Positioners are designed for long-term reliability, universal compatibility, ease of use, and system serviceability.  Unique features and advanced diagnostics allow users to not only understand what is happening in the process but also detect abnormalities and deterioration in the valve itself.

Features & Benefits

Reliability – Save money and time through years of trouble-free service:

  • A unique isolating body separates the air circuit from the electrical circuit, protecting the positioner from damage caused by intrusion of moisture, oil, and dust.
  • A non-contact magnetic rotary position sensor reduces damage caused by frictional wear, for long-term precision control.

Accessibility – These positioners are designed for use across every industry and application for universal process control:

  • Positioners are compatible with most commercially-available valves including the Azbil Model AGVB / AGVM; Fisher 657/667; Flowserve Mark 1; and more.
  • Information is accessible via a handheld communicator or host system to access parameter setup, alarms, and diagnostic functions with industry-standard communications protocols.

Usability – Positioners easily and quickly auto-calibrate and adjust, saving time and money:

  • Depending on the model, auto-calibration is initiated using push-buttons or a simple flat-head screwdriver.
  • Auto-calibration assesses valve movements, (upper and lower valve opening limits / travel; stroke time; hysteresis; etc) and adjusts the valve to optimal settings.

Maintainability – Advanced diagnostics detect abnormalities, making condition-based maintenance possible.  Available information includes:

  • Stick-slip, cycle count, total stroke count, max travel speed, and shut count monitoring.
  • Self-diagnostics monitors temperature and overall health of the positioner itself (CPU, ROM, EPM DUTY, etc).
  • Travel histogram and zero-point travel comparisons available with Valstaff valve diagnostics software.
  • Step response testing and input signal / travel deviation diagnosis.