Product - FasTrak Smart Positioner

​​​​​​​​​​Smart positioner with high-capacity, high-precision digital-pneumatic valve controller

FasTrak is a high-capacity, high-precision digital-pneumatic valve controller that replaces a conventional positioner. It has an excellent dynamic performance and high flow (Cv = 2). Configuration and calibration is carried out with a HARTTM device or by self calibration. FasTrak is compatible with double and single acting actuators, with or without a spring, a piston or a diaphragm.


Key features​

  • High Flow Precision Control
    The unique design allows high speed performance in large volume actuators without additional amplification (e.g. booster or quick exhaust)

  • Control Algorithms & Hardware
    Self calibration on double acting piston, diaphragm, rotary actuator with or without spring; patented adjustable independent ​​control parameter to open and close stroke

  • Strong Shaft Design
    Not sensitive to radial and axial external load caused by mounting and linkages

  • Environmental Protection
    The IP66 protection and unique exhaust protection system makes it suitable to be installed in harsh environments where there is tropical rain, dust, sand, salt

    • 4-20 mA position feedback

    • Digital inputs for configurable trips

    • Digital outputs configurable for limit switches and/or alarm

  • Communications

    • 4-20 mA control and power with HART™ communication protocol

    • High speed serial connection

  • Sofware Interface
    Dedicated software (RCFT) to set, customize, control and monitor high dynamic performance

  • Certifications & Approvals


    • Intrinsically safe (Ex ia) / Explosion proof (Ex d [ia]) according to:



FasTrak is available in stainless steel 316 with explosion proof barrier


  • No need for an amplification device in most applications

  • Superior control capacity of amplification device when installed

  • High flow with quick, precise complete control capability

  • Powerful self calibration software with the ability to totally personalise the parameters

  • Wide set of configurable embedded features

  • Robust design with a full metal housing


Technical specifications

2 wire from signal (min 3.5 mA, 12/30 Vdc)

Electrical connections
Signal ½” NPT (or metric M20x1.5 on request) Auxiliary input / output ½” NPT (or metric M20x1.5 on request)

Pneumatic connections
½" NPT female

Communication protocolHARTTM

4-20 mA with HARTTM protocol 
Configurable split range
On off
Nr 2 configurable digital ­(optocoupler 24Vdc)

4-20 mA  passive loop
On off
Nr 2 configurable digital (optocoupler 24Vdc)
Stroke Movement
Feedback angle of rotation
30°/120° (<30° with lower resolution)

Adjustable speed
Range 0/300 seconds, individually configurable for each direction

Characteristic curve
Equal percentage

Control parameter
Individually configurable for each direction

Travel control
Minimum and maximum settable stroke limits
Adjustable thrust on seat
Air Supply
Instrument air
Free of oil, water and dust to ISO 8573-1 - Class 3

Supply pressure
2.5÷10 bar

Air consumption
1.5 Nm3/h at 6 bar

Options & accessories

  • Remote feedback sensor

  • Universal linkage for:

    • linear long stroke actuator (70÷1500 mm) 

    • VDI/VDE 3845 for rotary applications

    • lever for side yoke or top mounting application

    • customized application

  • Directly mounted pneumatic accessories:

    • gauges and lock up valve

  • Collected or high silenced exhaust

  • High speed communication kit

  • High corrosion resistance version stainless-steel 316 case

  • Fail in place version

  • Advanced diagnostic with option pack

  • Display and push button

  • Low bleed version

Performance Data (for angle > 90°) According to IEC 61514-2
Hysteresis + deadband




Influence of ambient temperature
0.3% for every 10°C

Air capacity
Up to 180 Nm3/h at 6 bar (CV 2.3) 

Environmental Capabilities
Protection IP66 NEMA 4X
Operation temperature
-40° to +80°C
-50° to +80°C for GOST

Up to 100% 

Up to 2g (ISA S75.13)

CE markCE conformity and EMC

Stainless steel feedback shaft
Fully stainless steel 316

Aluminium (Ex ia) 3.25 kg
Aluminium (Ex d) 4.11 kg
Stainless steel 316 (Ex ia) 8.82 kg
Stainless steel 316 (Ex d) 10.78 kg​

Remote control software interface

  • User friendly interface with all key parameters shown on one screen

  • Tool for easy mechanical feedback alignment

  • Self calibration wizard

  • All parameters with full control via an interactive start up page

  • Graph tool for performance monitoring with configurable parameters

  • Events and errors report

  • Certified HART™ protocol communication 375/475 handheld compliant

  • Option Pack 1 Advanced diagnostic: Valve signature - Step response

  • Option Pack 2 Advanced feature: Stability control - Soft approach to seat frequency response analysis

Latest News

Important Update – COVID-19
18 March 2020
Valve Doctor programme celebrates 20th anniversary
16 September 2019
Unconventional support for the unconventional oil and gas industry
01 July 2019
17 June 2019
IMI CCI showcases choke valve at DUG Rockies conference
04 June 2019
Jackie Hu appointed Divisional Managing Director of IMI Critical Engineering
07 March 2019
Roy Twite to succeed Mark Selway as Chief Executive of IMI plc
05 March 2019
IMI Critical holds Safety Summit
21 September 2018
New HSE handbook to help keep field service engineers safe
10 August 2018
Safety first at IMI Critical
31 July 2018
IMI InterAtiva’s Series RK Valves certified ‘fire-safe’
24 July 2018
IMI CCI participates at regional VPP Safety Summit
08 June 2018
Largest Romanian customer recommends IMI Remosa
10 May 2018
Lean success in IMI Critical back office functions
04 May 2018
Isolation valves adapted for Fluidised Catalytic Cracking applications
30 April 2018
IMI Critical Korea closes in on world-class LEAN performance
27 April 2018
IMI board tours IMI Critical businesses
25 April 2018
New positioner software tools from IMI STI
08 February 2018
Launch of Zero Backlash Scotch Yoke Mechanism
16 January 2018
IMI Critical Korea certified to sell actuators in Europe
20 September 2017
IMI Critical named ‘supplier of the year’ by Korea’s Doosan
19 September 2017
100th Valve Doctor graduates from IMI Critical
13 September 2017
Top HSE certification for IMI Critical’s California site
12 September 2017
Launch of High Endurance Actuator
21 April 2017
Launch of AB6350 valve
06 April 2017
Launch of 100DPC Multi-trim
17 March 2017
Launch of 840GS control valve
22 December 2016
IMI Critical to exhibit new technology at ADIPEC 2016
25 October 2016
New graduates join IMI Critical in four countries
22 September 2016
IMI Critical to take stand at ONS 2016 in Norway
16 August 2016
IMI Critical opens new China plant in Qingpu
27 July 2016
IMI CCI Korea celebrates 2,000 days of no “Lost Time Accident”
25 July 2016
Visit to IMI Z&J Germany by the Russian Economic Bureau from Bonn
11 July 2016
IMI Z&J Düren moves into modern offices
08 July 2016
IMI Critical Engineering forms strategic partnership with MRC Solberg & Andersen
05 April 2016
IMI Way Day 2016 date announced
01 March 2016
NEW IMI Eye – fourth edition
26 February 2016
IMI Critical co-locates China businesses
20 January 2016
IMI CCI Switzerland gains certification for new generation safety valves
18 December 2015
IMI Critical rise to Dragon challenge
30 November 2015
IMI STI achieves CRCC approval for new products
24 November 2015
IMI Truflo Marine Attend the Engineering Technology and Innovation Exhibition 2015
23 November 2015
IMI CCI Sweden secures new contracts on three continents
23 November 2015
IMI Critical Engineering appoints new petrochemicals head
05 November 2015
IMI CCI Czech Republic gains ‘Safe Enterprise’ certification
03 November 2015
IMI Critical announces 90mRMB investment in China
29 October 2015
IMI CCI SriCity wins regional safety award
27 October 2015
Key clients attend grand opening of new Aberdeen facility
23 October 2015
IMI companies ‘act as one’ to deliver for customer
02 October 2015
IMI CCI Sri City approved by NTPC
01 October 2015
IMI Critical Engineering showcases innovation at Valve World Expo Asia
28 September 2015
Nexen awards IMI Orton
25 September 2015
IMI Critical Engineering celebrates opening of new Jubail repair centre
23 September 2015
IMI Critical and IMI Precision join forces at Valve World Expo + Conference Asia 2015
21 September 2015
IMI Critical Engineering opening of new Jubail Repair Centre
18 September 2015
IMI CCI India manufactures first 1050MW turbine bypass valve
20 May 2015
Largest ever contract for IMI Critical Engineering
18 February 2015
New Houston facility opens
12 February 2015
IMI Critical completes acquisition of Bopp + Reuther
02 January 2015
IMI Critical takes family of brands to Valve World 2014
11 December 2014
IMI STI doubles size of Italian plant
20 October 2014


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Product - FasTrak Smart Positioner