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    OUR PRODUCTS

    Actuatech SPA offers a wide range of actuators including rotary actuators in various models and types for remote control of quarter-turn valves with nominal torques from 8Nm to 32000Nm. 

    Our actuators are manufactured in compliance with international standards, in different material and external protection for all installation requirements. Anodized aluminum, iron, stainless steel are are the mmostly used alloys to meet the needs of different installations from simple application to those in areas with particularly aggressive atmospheres. Our actuators are suitable for temperatures from -50 ° C to + 150 ° C, and with customized solutions designed to solve customer problems.

    ENERGY SAVING SYSTEM

    DOUBLE ACTING

    The diagram shows the torques development during the valve cycle from close to open and close again.

    1. Rack & Pinion flat torque,
    2. Scotch Yoke canted torque,
    3. Represent the typical valve torque
     
    Products - Double acting

    The blue area between the Rack & Pinion and Scotch Yoke diagrams shows the Motive Energy Saving, easily verified comparing the compressed air consumption stated in our data table and any Rack & Pinion manufacturer.

     

    SPRING RETURN

    The diagram shows the torques development during the valve cycle from close to open and close again.

    1. Rack & Pinion flat torque,
    2. Scotch Yoke canted torque,
    3. Represent the typical valve torque
     
    Products - Spring return
    The blue area between the Rack & Pinion and Scotch Yoke diagrams shows the Motive Energy Saving, easily verified comparing the compressed air consumption stated in our data table and any Rack & Pinion manufacturer.

    BTOV: Break Torque to Open Valve ;
    BTOA: Break Torque to Open Actuator ;
    BTOA = BTOV+SF ( Safety Factor ) .

    OTHER SCOTCH YOKE SYSTEM ADVANTAGES

    Higher Breakaway torque. The scotch yoke system start its cycle with the higher torque that helps the valve high breakaway torque required at first opening phase.  
    higher torque
           
    Special pistons sealing pack. The special double on one sealing fascia grants a longer life maintenance free without Oring sticking and replacement.  
    special piston sealing pack
    Frictionless rotary system. The bearing force transmission between the pistons and the driving shaft reduce the friction, compared to the rack and gear direct contact.  
    frictionless rotary system
         
    More torque with same bore. In comparison with the rack and pinion system, the scotch yoke system used in the same cylinder bore, with equal air pressure thanks to its mechanical construction develops a higher torque.
    Less air consumption = less energy consumption.
      Scotch yoke Actuatech
    GD30 = 30Nm
    0,12 l/cycle
     
    Scotch yoke Actuatech
    GD480 = 480Nm
    2,0 l/cycle
    Rack and pinion
    Competitor 30Nm
    0,4 l/cycle
     
    Rack and pinion
    Competitor 480Nm
    6,2 l/cycle
           
    Less weight. With reference to the above bore difference, the overall dimensions for the Scotch Yoke are minors than the R & P actuator, consequently the Scotch Yoke actuators are less in weight.   Scotch yoke Actuatech
    GD30 = 30Nm
    1,0 Kg
     
    Scotch yoke Actuatech
    GD480 = 480Nm
    8,2 Kg
    Rack and pinion
    Competitor 30Nm
    1,5 Kg
     
    Rack and pinion
    Competitor 480Nm
    14,5 Kg

    Stainless steel driving shaft. Stainless steel gives a suitable corrosion protection against the polluted and aggressive environmental, better than the actuator with drive shaft nickel plated protected.

    Internal lapped cylinder bore. The fine internal finishing with extra lapping works reduces the roughness and increases the life of the sliding PTFE parts.

    Powerful Spring return actuator end cycle. The scotch yoke in spring return actuator gives a final increasing torque that grants a perfect sealing of the valve especially in the closing phase (the spring force works right on the piston axis).

    Actuatech S.p.a.2020-02-12
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