Gas over oil actuators

Neles™ Gas-over-oil actuator, series N1-GOV & Direct Gas operated Actuators, series N1-GOA

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The Neles™ Scotch yoke type series N1 GOV and GOA actuators combine rapid gas response with hydraulic precision and deliver exceptional torque. With built-in safety features, they enhance protection, minimize downtime, and offer efficient, cost-effective actuation to keep your operations running seamlessly.

Heavy duty, high performance

provides powerful actuation under extreme loads and pressures  

Scotch yoke design

with wide torque range, ensuring enhanced reliability  

API-6DX compliant

meets stringent standards for critical oil and gas operations  

Unified design and global service

ensures seamless integration, maintenance and support  

Designed for on-off services in natural gas pipelines

N1-GOV Actuator: Gas-over-oil operated, double-acting actuator uses high-pressure gas supplied from the gas pipeline, which is suspended above hydraulic fluid, to move the mechanics of the actuator.

N1-GOA Actuator: In Direct gas-operated, double-acting actuator where gas supplied from the pipeline is directly connected to the gas cylinder to move the actuator.

Features

  • Built over double acting Neles N1 scotch yoke actuator for quarter turn valves
  • Sour gas and sweet gases can be used for Gas Over Oil application
  • Back up volume gas tank for manual override as well as extra safety strokes
  • Rugged and modular design
    • Provides savings in long term operational and service costs
    • Enables ease of maintenance and reduced inventory costs
  • Wear and corrosion resistant design
  • Pressure containing parts as per ASME SECTION VIII
  • Safe and easy maintenance
  • Gas reservoir for operation of actuator on absence of main line pressure
  • Proven product  
  • External corrosion protection in compliance with ISO 12944-2 up to class C5M

Options

  • Line break valve for pipeline fractures safety
  • High pressure open inhibit (PDSH)
  • Auto closure pressure switch (PSLH)
  • Minimum working pressure up to 5 bar
  • Hydraulic handpump for manual override
  • Coalescing filter
  • Dielectric fittings
  • Electrical junction box with local/remote option
  • SCADA connectivity option
  • Lockable high-pressure ball valve provides system isolation during maintenance
  • Tailored for complex demands

Applications

  • Natural gas transmission lines
  • Compressor stations
  • River crossing gas stations
  • SV stations and pigging stations
  • Manual to automation conversion lines
  • Gas storage plants
  • City gas distribution stations
  • LNG distribution lines

Specifications

Type:

Scotch yoke type quarter turn gas/hydraulic actuator
Series:

Double acting

Supply medium:

Sour gas and sweet gases 
Design:

ASME VIII Ӏ API 6DX Ӏ ISO12490 Ӏ EN15714
Torque outputrange:

Up to 6,00,000 Nm

Temperature ranges:

-20 ... +85 °C

Protection class:

IP66 and 67 (IEC 60529)

Actuator enclosure: IP66 (IEC 60529)

Design pressure:

Up to 110 bar

Mounting face:

ISO5211 and VDI/ VDE3845

Downloads

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