Overview

The ABB AV3321000 I/P positioner is a Type AV3 characterizable pneumatic positioner designed for proportional control of pneumatic actuators and control valves. As an electro-pneumatic converter, it accepts a 4–20 mA electrical input signal and converts it to proportional pneumatic output, enabling precise positioning of linear or rotary actuators across industrial process control applications. This used unit offers reliable performance for retrofit and replacement installations.

Key Features

Electro-pneumatic (I/P) design with 4–20 mA signal input compatibility

Integrated position transmitter for feedback control and monitoring

Characterizable output with zero, span, and gain adjustments for application-specific tuning

Adjustable speed control orifices for response time optimization

Compact, durable construction suitable for plant floor and control panel mounting

Field-proven Type AV3 platform compatible with standard pneumatic mounting kits

Technical Specifications

Product Type: Electro-pneumatic I/P Positioner (Type AV3)

Input Signal: 4–20 mA DC

Signal Supply Current: Maximum 50 mA

Position Feedback: 4–20 mA transmitter output (integrated)

Supply Air Pressure: 3–8.6 bar (45–125 psig)

Output Air Range: 0–6 bar (0–90 psig) nominal

Operating Temperature Range: −25 to +40°C (−13 to +104°F) standard operation

Dew Point Requirement: Supply air dew point must be ≥7.7°C (≥18°F) below lowest operating temperature for reliable low-temperature performance

Output Flow Capacity: Dependent on mounted actuator size and speed adjustment settings (see manufacturer tables)

Mounting: Standard ABB mounting kit compatible (kit number 5327321__ dependent on valve stem size)

Condition: Used, tested and functional

Typical Applications

The ABB AV3321000 is widely used in:

HVAC systems requiring proportional valve control

Power plant feedwater and steam control loops

Process control systems with process transmitter feedback

Retrofit installations replacing worn or obsolete positioners

Flow, pressure, and temperature control circuits requiring fast response

Hazardous location installations (Groups A, B, C, D approval available)

*ABB AV3321000 I/P POSITIONER BRAND NEW NEVER INSTALLED

Returns Accepted