Rotork GP/GH Range - Heavy-Duty Scotch Yoke Pneumatic & Hydraulic Actuator

Brand: Rotork PLC

GP (pneumatic) and GH (hydraulic) range scotch yoke actuators are designed to provide a rotary, quarter-turn movement for either on/off or modulating duty. 

The rugged yet compact design is available with two different yoke designs. 

The classic symmetric yoke delivers peak torque at both ends of stroke.

Alternatively, they can be supplied with canted torque arms designed to deliver peak torque at only one end of stroke. 

Use of canted arms can often reduce actuator size, weight and cost for valves with appropriate torque demand characteristics.
Features
  • Pneumatic and hydraulic actuators in double-acting and spring-return configurations
  • Corrosion resistant cylinders
  • Complies with EN60529 (1991) + (A1:2000) for IP67M
  • Suitable for use in SIL2 and SIL3 rated safety systems
  • Certified to IP66M/67M
  • Certified to ATEX 2014/34/EU
  • Certified in accordance with PED 2014/68/EU
  • Torque output to 600,000 Nm (5,300,000 lbf.in)
  • Certified suitable for use at SIL3 as a single device (IEC 61508)

Specifications

Operating Pressure

  • Hydraulic: up to 3,000 psi (210 bar)
  • Pneumatic: up to 175 psi (12 bar)

Features

  • Manual Override

Torque

  • Output: Max. 600,000 Nm (5.3 Million lbsf.in)

Environmental Protection

  • IP66M
  • IP67M

Operating Temperature

  • Extreme Low: -76° to 320° F (-60° to 160° C)
  • High: -4° to 320° F (-20° to 160° C)
  • Low: -40° to 320° F (-40° to 160° C)
  • Standard: -22° to 212° F (-30° to 100° C)

Enclosure, Body Material

  • CentreBody: Carbon Steel / Ductile Iron

Flange Material

  • Carbon Steel

O-Ring Material

  • NBR

Material of Construction

  • Rod Bushing: Steel / Bronze / PTFE
  • Sliding Ring: PTFE/Graphite
  • Thrust bar, Tie Rod, Stop Screw, Spring & Connecting Rod: Alloy Steel
  • Yoke Bushing: Bronze
  • Yoke, Guide Block, Piston Rod, Piston, Pneumatic Cylinder & Spring Cartridge: Carbon Steel
  • Yoke: Ductile Iron

Seal Material

  • NBR/PTFE/Graphite

Approvals & Certifications

  • ATEX
  • EAC
  • PED

Approvals & Certifications

  • SIL 3

Thrust

  • Maximum 10,000 kgf (22,046 lbsf)

Documentation

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