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IMI STI
RTC - Pneumatic Scotch Yoke Quarter Turn Actuator
Low-pressure compact pneumatic quarter-turn valve actuators
Built with a durable carbon steel housing and waterproof Scotch yoke mechanism for dependable operation in extreme environments.
Features canted or symmetrical configurations with chromium-plated guide bars and PTFE-filled bushings for smooth motion and enhanced durability.
Nickel-plated cylinders reduce friction and resist corrosion, ensuring long-lasting performance and minimal maintenance needs.
Features
The RTC pneumatic actuator series ensures reliable operation of quarter-turn valves, including ball, butterfly, and plug valves, for heavy-duty on-off and modulating applications. Featuring a waterproof Scotch yoke mechanism, it converts linear movement into rotary motion for precise valve control. Its weatherproof carbon steel housing protects moving parts in harsh environments, while electroless nickel-plated cylinders minimise friction and resist corrosion. Available in canted or symmetrical configurations, it includes chromium-plated guide bars and PTFE-filled steel bronze bushings for durability. Certified lifting lugs ensure safe handling, and the safety design allows secure cylinder seal replacement. ISO 5211 flange compatibility included.
Key features
Compact weatherproof housing
Double-acting or spring-return design
Canted or symmetrical Scotch yoke
Nickel-plated cylinders resist corrosion
Durable bronze bushings
ISO 5211 and NAMUR compatible
Certified lifting lugs
Specifications
Ambient Temperature (°C)
-30 to 100
Manual Override
Yes
Cylinder Diameter (mm)
300
300
Material
Stainless Steel
Carbon Steel
Design Type
Single Acting
Double Acting
Double Acting With Spring
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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