Scotch Yoke Actuator
Fast Cycle, High-Torque Performance
ValvTechnologies ValvTorque Scotch Yoke pneumatic actuators offer fastand robust breakaway torque for valves that require high torque to unseat.
The simple, efficient scotch yoke design offers 308 to 250, 000Nm of torquein Double Acting models and 118 to 90,500Nm in Spring Return models.:
All configurations incorporate three stages of internal and external coatingsto resist corrosion and are internally coated with PTFE.
Technical Data
Cylinder Sizes
150 – 1,100mm
Yoke Type
Symmetric
Canted
Action Type
Double acting
Single acting
Spring Size
3Bar - 6Bar
Operating Temperature
Standard:-20°C~8Q°C
Low Temperature:-60°C~80°C
High Temperature:-20°C~120°C
Torque Outputs
Double acting: 308~250,000Nm
Spring return : 118~90,500Nm
Operating Pressures
Operating Pressures 3~7 Bar
Mounting
NUMAR
Compliance
ISO 5211, SIL3
- Yoke Selection– available with symmetric or canted yokes.
- Corrosion Resistant – three stages of internal and external coatings plus PTFE inner cylinder surface.
- Modular Design– available field-serviceable drive, power, spring and override modules.
- Travel Adjustment – Bi-Directional travel stops allow 80° to 100° adjustment. preventing ingress of foreign object or water.
- Replaceable Bearings – Replaceable bearings protect sliding and rotating parts in dry and lubricated conditions.
- High Efficiency – The piston rod and guide block connection, superior surface finishes and self-lubricating bearings maximize input energy .