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產(chǎn)品詳情

  • 產(chǎn)品名稱：Model Alga

  • 產(chǎn)品型號(hào)：Model Alga
  • 產(chǎn)品廠商：其它品牌
  • 產(chǎn)品文檔：
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Model Alga Double acting pneumatic quarter-turn actuator for output torques to 248,500 Nm.雙氣動(dòng)輸出扭矩回轉(zhuǎn)執(zhí)行器248500牛米
詳情介紹：
Model Alga
Double acting pneumatic quarter-turn actuator for output torques to 248,500 Nm.雙氣動(dòng)輸出扭矩回轉(zhuǎn)執(zhí)行器248500牛米

Model Alga

  • Description
  • Specifications
  • Documentation
Biffi Actuators & Controls, Pneumatic Actuators, Quarter Turn, Alga DA Pneum Act - Scotch Yoke Design

Double acting pneumatic quarter-turn actuator for output torques to 248,500 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.
      • 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
         
Specifications
Technical Data    
Supply pressure       :   1.5 to 10.5 bar
Supply medium       :   air, nitrogen or sweet gas
Output torque       :   to 248,500 Nm
    Ambient temperature
    standard range : -30°C to +100°C
    (-20°F to +210°F)
    optional ranges : -55°C to +150°C
    (-65°F to +300°F)

 
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