Quarter Turn

GPO

Double acting gas-over-oil actuators for remote and local operation of valves in on-off and modulating heavy-duty service. Available with output torques up to 750,000 Nm.

Features & Benefits:

  • Canted or symmetric scotch yoke design achieves high break torques for operating all kinds of quarter-turn valves.
  • Control system components engineered specifically to suit remote gas pipeline applications.
  • Control components are sealed within a dedicated enclosure, ensuring low maintenance.
  • Electronic control groups available to enable full valve network communication.
  • Electroless nickel plated and polished cylinder provides maximum corrosion resistance and reduces friction.
  • Integral manual handpump enables valve cycling when sufficient line pressure is not available.
  • Totally enclosed weatherproof carbon steel housing for maximum strength.
  • Environmentally-friendly design ensures up to 50% less gas discharge than alternative systems.
  • Gas over oil tanks separate the feeding gas from the hydraulic cylinder.

General application
GPO gas-over-oil actuators offer the major benefit of using the gas flowing in the pipeline for their operation, with no need for any other power source. They are ideal for extreme applications both on and offshore.

Approvals
Safety integrity level:
(IEC 61508-1÷7:2010) – Suitable for use in SIL3 applications
Area classification:
(ATEX) - II 2GD 135°C (T4)
Enclosure standards:
(IEC 60529) - IP67M
(ANSI/NEMA 250) - NEMA 4, 4X, 6
Pressure equipment directive:
PED 97/23/EC
Machinery directive:
2006/42/EC

Technical data
Design pressure: Up to 105 barg
Supply medium: Sweet or sour highpressure gas, nitrogen or instrument air
Output torque: Up to 750,000 Nm
Ambient temperature
Standard range: -30°C to +100°C (-20°F to +210°F)
Extended temperature range available

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Technical Data Sheets

GPO Gas Powered Actuator (Metric) (English)

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Certificates, Approvals & Qualifications

INERIS EQEN 016616 14 ALGA ALGAS OLGA OLGAS GIG GIGS GPO OLGA H OLGAS H (English)

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GPO IEC 61508 SIL 3 (English)

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GPO + Control groups IEC 61508 SIL 3 (English)

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EN 60529 IP66, IP66M (English)

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