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Rotork LP/LH Range - Pneumatic & Hydraulic Actuator

Brand: Rotork plc

Pneumatic and Hydraulic Actuators for Linear Valves

Rotork manufacture a comprehensive range of double-acting and spring-return pneumatic and hydraulic actuators to suit all valve sizes. Our LP/LH linear actuators offer the advantages of compact size, high performance and a simple but highly reliable design. They are ideal for operating on/off and control functions of both globe and wedge gate valves. Both spring-return and double-acting configurations are available with either pneumatic or hydraulic cylinders.

LP/LH actuators can be fitted with handwheel (both fixed and declutchable) or hydraulic manual override if desired. They are available in both spring-down and spring-up travel direction.

Approvals and industry standards
  • Actuators certified in accordance with ATEX Directive
  • Actuators certified in accordance with PED Directive
  • Actuators certified in accordance with EAC
  • Actuators certified IP66M/67M in accordance with IEC 60529
Max. Thrust:
  • Pneumatic double-acting: 1,800,000 N (404,656 lbs). Pneumatic spring-return (spring end thrust): 186,000 N (41,814 lbs). 
  • Hydraulic double-acting: 5,500,000 N (1,236,450 lbs). Hydraulic spring-return (spring end thrust): 400,000 N (89,925 lbs).
Features
  • Carbon steel design single and double-acting cylinders. These are electroless nickel-plated to reduce surface roughness and to provide minimum friction and maximum protection against corrosion.
  • The piston rods are carbon steel and chromium-plated. This helps prevent corrosion and minimises sliding friction on the dynamic seals. The rubber seals help to avoid slip effect, even after prolonged periods without operation.
  • The visual position indicator is directly connected to the valve stem and shows actuator/valve full linear stroke.
  • Totally enclosed carbon steel spring cartridge

Specifications

Brand

Actuation Type

  • Hydraulic
  • Pneumatic

Maximum Thrust

  • 186,000 to 5,500,000 N (41,814 to 1,236,450 Lbs)

Material of Construction

  • Breather: Sintered Bronze
  • Piston, Adapter, Cylinder Tube, Spring Container, Spring Guide PLate, Stop Bolt & Coupling: Carbon Steel
  • Shaft Bushing: Steel/Bronze/PTFE
  • Sliding Ring: PTFE
  • Spring: Spring Steel
  • Tie Rod: Alloy Steel

Operating Pressure

  • Hydraulic up to 210 bar (3,625 psi)
  • Pneumatic up to 12 bar (175 psi)

Temperature Range

  • Exterme Low: -76° to 212° F (-60° to 100° C)
  • Low: -40° to 212° F (-40° to 100° C)
  • Standard: -22° to 212° F (-30° to 100° C)

Approvals & Certifications

  • ATEX
  • EAC
  • PED

Environmental Protection

  • IP66M / IP67M

Approvals & Certifications

  • SIL3

Flange Material

  • Carbon Steel

Features

  • Manual Override

O-Ring Material

  • Buna-N

Seal Material

  • Buna-N / PTFE / Bronze

Documentation

Product Brochures

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