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IMI STI
RTQ - Pneumatic Scotch Yoke Quarter Turn Actuator
High torque pneumatic quarter-turn actuators for harsh environments.
Featuring rugged carbon steel housing and a sealed weatherproof design, it ensures durability in harsh environments.
Modular options include double-acting or spring-return designs with flexible Scotch yoke mechanisms for enhanced adaptability.
Nickel-plated cylinders minimise friction and corrosion, offering long-lasting operation with low maintenance requirements.
Features
The RTQ actuator delivers high torque and reliable performance for onshore and offshore applications, including on/off and modulating valves. Designed to withstand harsh environments, it features a durable carbon steel housing and a fully sealed weatherproof design to protect moving parts. Available as double-acting or spring-return, its Scotch yoke mechanism offers both canted and symmetrical options for flexibility. Chromium-plated components and electroless nickel-plated cylinders minimise friction and resist corrosion, ensuring long-lasting operation. Strategically placed lifting lugs provide safe handling, while a position indicator with NAMUR drive slot and ISO 5211 flange ensures compatibility with various systems.
Key features
Sealed weatherproof housing for durability
Modular double-acting or spring-return options
Carbon steel construction resists wear
Bronze bushings absorb transverse force
Nickel-plated cylinders reduce friction
NAMUR/ISO standard compatibility
Lifting lugs for safe installation
Specifications
Ambient Temperature (°C)
-30 to 100
Manual Override
Yes
Cylinder Diameter (mm)
935
935
Material
Stainless Steel
Carbon Steel
Design Type
Single Acting
Double Acting
Operating Pressure (bar)
12 to undefined
Supply Medium
Air
Nitrogen
Sweet Gas
Sour Gas
Rotary Movement (°)
90
Certification
PED
ATEX
MACHINERY DIRECTIVE
IP66/67M
SIL3
EAC (TR TS)
Resources
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