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  • 产品名称:Model Algas

  • 产品型号:Model Algas
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简单介绍:
Model Algas Spring return pneumatic quarter-turn actuator for spring end torques to 77,400 Nm.弹簧复位气动回转执行器至77,400 Nm的扭矩
详情介绍:
Model Algas
Spring return pneumatic quarter-turn actuator for spring end torques to 77,400 Nm.弹簧复位气动回转执行器至77,400 Nm的扭矩

Model Algas

  • Description
  • Specifications
  • Documentation
Biffi Actuators & Controls, Pneumatic Actuators, Quarter Turn, SIL COC Pneum Act, model ALGAS

Spring return pneumatic quarter-turn actuator for spring end torques to 77,400 Nm.

Features & Benefits:

  • Scotch yoke design generates high break torque needed for the actuation of many quarter-turn valves.
  • Six bearings provide reliability, smooth operation and extended service life:
- Two bronze yoke bearings ensure minimal friction. - Two bronze sliding block bearings spread load over large surface area. - Guide block bearing and piston rod bearing of sintered bronze impregnated with PTFE increase efficiency, reduce maintenance and prolong actuator life.
  • Graphite-impregnated PTFE piston bearing reduces friction between the piston and cylinder bore and allows the cylinder to be operated without lubrication.
    • Guide bar supports the transverse forces and insures proper support of the piston rod. Hard chrome plating on guide bar provides corrosion resistance and minimal friction loads.
      • Chrome-plated piston rods provide maximum corrosion resistance and minimal friction loads on dynamic seals.
      • Electroless nickel-plated cylinder bore provides maximum corrosion resistance and reliability.
      • Multiple external tie bar design provides maximum cylinder integrity.
      • Totally enclosed, weatherproof carbon steel housing provides maximum strength. Internal coating protects against corrosion.
      • External travel stops allow precise adjustments of ± 4° rotation at each end of travel.
      • Low hysteresis and high response enhance modulating service.
      • Spring cartridge incorporates up to four springs, fully encapsulated in a tamper-proof factory welded assembly.
      • Spring configurations available up to 77.400 Nm spring end torque.
      • Available with canted or with symmetric scotch yoke mechanism to suit the valve characteristics.
      • Special coatings for offshore or corrosive environments.
      • Special version available for use with sour gas supply.
      • ATEX certified II 2 G D.
         
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