Actreg Scotch Yoke - Actuator
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EVERY Actreg Scotch Yoke series actuator is built to provide long and efficient service with minimum maintenance. The design, engineering and materials used in their construction ensure optimum performance even in the hardest environments. Totally enclosed weatherproof centre-body and caps provided with o'rings to ensure the water ingress protection. The centre-body has a guide that supports transverse forces of the scotch and yoke mechanism and ensures proper alignment of the piston rod. External travel stop screws allow a precise valve angular stroke adjustment between 80º to 100º
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Body
+ 10 different sizes from F10 (500 Nm) up to F60 (250.000 Nm).
- Internal o’rings to ensure water ingress protection.
- NAMUR standard for all sizes for assembly of switch boxes and positioners.
- Threaded parts in front and the back side of the body for easy assembly of a pneumatic control panel.
- Possibility of a venting valve to avoid internal overpressures due to mechanical movements and to prevent the entry of water or corrosive elements.
Internal Body Parts
- Round rolled is used, reducing the friction between the yoke arm and pin, minimizing the wear.
- Replaceable bearings protect the sliding and rotating components, suitable for either dry or lubricated working conditions.
- PTFE thrust bar prevents yoke pin axial movement, transferring axial loads directly to the drive module case.
- Connects the piston rod with the guide block, compensating for side load deflection and reducing wear on rod, bearings and seals.
Torque
The Scotch Yoke actuators are manufactured in many different model number combinations of actuator sizes, cylinder diameters, and double or spring return action are available for installation on ¼ turn valves. Scotch Yoke actuators are designed for use over a wide range of pressures or temperatures
The scotch and yoke mechanism is available in symmetric design to meet application specific valve torque demand requirements with minimum cost and weight. Scotch Yoke actuators are provided with modular design. A pneumatic or hydraulic cylinder can be attached to either or both sides. A spring cylinder can also fitted to either side for ESD (emergency shutdown) applications. With large stock or finished and semi-finished components always available, actuators can be assembled and supplied with very fast and reliable deliveries
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