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Process automation
Technician facing IMI STI control system with blue actuator, gauges, and tubing in an industrial setting.
## IMI STI products are designed and manufactured by IMI specialists, offering a full valve actuation package for severe service duties in power and oil and gas.
IMI STI severe service valve actuation unit in operation

Our specialisms

Actuation and positioning solutions

We offer advanced actuation and positioning solutions for your most demanding industrial applications. Our technologies provide your plant with reliable, safety focused performance built on decades of engineering expertise.

Smooth, precise control

We deliver accurate, responsive control to maintain stability and optimise your plant's performance.

Demanding environments

We engineer technologies that provide you with enhanced reliability under high pressures and temperatures in your most demanding applications.

Low maintenance

Durable design with self-lubricating systems, reducing your maintenance time.

Proven reliability

Built for dependable, long term performance and trusted by our customers worldwide.

Severe service valve actuator assembly

Solutions

Engineered as a complete actuation package

IMI STI products are engineered as part of a complete valve actuation package. The range spans linear and quarter-turn actuators, positioners and accessories, designed and manufactured by IMI specialists to work together in demanding operating conditions. This approach ensures predictable performance, simplified integration and long-term reliability in severe service applications.

Linear actuators

Green IMI STI SCV linear actuator with complex piping and components for precision valve control.

Quarter Turn Actuators

IMI STI rotary actuator with cylindrical housing and visible piston for valve control.

Stepper Actuators

SM Stepper Motor Actuator with pressure gauge, metal tubing, and electrical connectors for precision control.

Instrumentation and Accessories

CS Quick Exhaust Two-way Valve with metallic body and slotted cylindrical section.

Positioners

IMI SHP Smart High-Performance Positioner with display screen and control buttons on cut-out background.
Final assembly and inspection of valve actuator

Innovative solutions

60 years of customer led transformation

Our site in Bergamo, Italy draws on decades of engineering experience to develop advanced actuation products that support your operational goals. Your needs drive our innovation like zero backlash mechanisms and specialised fireproofing engineered for durability and performance in the toughest environments.

Frictionless operation

Our patented lubrication system provides smooth, maintenance free performance, reducing downtime.

Zero backlash precision

Engineered for precise control, it eliminates wear to ensure reliable, long term accuracy in your operations.

Featured products

RTQ - Pneumatic Scotch Yoke Quarter Turn Actuator

IMI STI

RTQ - Pneumatic Scotch Yoke Quarter Turn Actuator

RTC - Pneumatic Scotch Yoke Quarter Turn Actuator

IMI STI

RTC - Pneumatic Scotch Yoke Quarter Turn Actuator

SC/V - Pneumatic Linear Actuator

IMI STI

SC/V - Pneumatic Linear Actuator

TP - Pneumatic Pressure Switch

IMI STI

TP - Pneumatic Pressure Switch

SC/VLT - Linear Pneumatic Lift and Turn Actuator

IMI STI

SC/VLT - Linear Pneumatic Lift and Turn Actuator

QuickTrak™ Digital Valve Control System and Positioner

IMI STI

QuickTrak™ Digital Valve Control System and Positioner

Industries we specialise in

Solutions for key industries across the globe

The IMI STI technology range is used across worldwide vital industries but is just part of the wider IMI solutions porfolio.
Offshore oil and gas platform with cranes, pipelines, and exhaust stacks under a clear blue sky.

Oil and Gas

Red CHP power station with three tall chimneys under a clear blue sky.

Power

Petrochemical facility with red-and-white towers, flares, yellow process piping and access platforms under blue sky.

Petrochemicals

Industrial facility with silos, conveyors, and raw material piles under a blue sky.

Process Industries

Circular water treatment facility with overflow cascading over evenly spaced barriers.

Water

Molten metal pouring from large crucible in industrial facility with sparks and flames.

Metals

Find your optimal flow control solution

Maximise flow control performance and safety with IMI, a world leading provider of valve solutions for critical applications

Engineering the future together

Like to learn more about our products? Let our experts help you find your perfect flow control solution.
IMI engineer stands with arms crossed in front of CAD screens displaying engineering designs.