Trade.Information

Product Name: Biffi Alga Double Acting Pneumatic Actuator

Product Description

Double Acting Pneumatic Quarter-Turn Actuator For Output Torques to 2,200,000 lb.in. Features and 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 Accessory mounting brackets provided for mounting of controls or enclosures Manual jackscrews and hydraulic manual overrides optional Spring return actuators available Options and accessories: - Accessory mounting brackets provided for mounting of controls or enclosures Manual jackscrews and hydraulic manual overrides optional Spring return actuators available. General application: - Designed for on-off or modulating control of quarter-turn Ball, Butterfly, Plug or Damper style valves. Technical Specifications: - Supply Pressure : 20 to 150 psig Supply Medium : air, nitrogen or sweet gas Output torque : To 2,200,000 lb.in. Ambient temperature standard range : -20°F to 210°F optional ranges : -65°F to 300°F (-55°C to 150°C)