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Gas Over Oil Actuator

Gas over oil actuators work with line pressure. They work by compressing hydraulic oil with the supply pressure. They perform perfectly on all quarter turn valves. They are the actuator type that is frequently preferred in natural gas pipelines. Gas over oil actuators can be upgraded with emergency shutdown, fail safe and line break features according to customer requirements.


Actuator Type Gas Over Oil
Mechanism Type Scotch Yoke
Operation Type Manual / Remote / Automatic
Operating Pressure 12 — 140 Bar
Operating Temperature -60 / +150 °C
Applicable Valve Type Ball / Plug / Butterfly
Applicable Valve Size 2″ — 56″
Emergency Shutdown (ESD) Available
Power Source Natural Gas
Connection Standard ISO 5211
Tube Design Standard ASME Sec. VII
Test Standadrd Acc. To Customer Specs.
Certification Atex 94-9-EC / SIL Applicable


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1 Stainless, locked cabinet.
2 Manual pump is inside the cabinet.
3 All tubings are stainless material.
4 All moving parts are stainless material.
5 Natural gas filter is a default feature.
6 Speed adjustment valves on request.