Model AlgaDouble acting pneumatic quarter-turn actuator for output torques to 248,500 Nm.双气动输出扭矩回转执行器248500牛米
详细介绍
Model Alga Double acting pneumatic quarter-turn actuator for output torques to 248,500 Nm.双气动输出扭矩回转执行器248500牛米
Model Alga
Description
Specifications
Documentation
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.
