- Gas operated actuators are commonly utilized in pipeline applications and are ideally suited for sweet natural gas lines, wherein the actuators use the gas in the line. These types of actuators can be either direct gas operated or gas over oil type. In both configurations, a biodegradable hydraulic fluid is utilized in offshore applications for safer operation.
- Gas-over-oil actuators use high-pressure gas supplied from the pipeline, suspended above a hydraulic fluid to move the mechanics of the actuator. Gas over oil actuators only comes in double acting configurations.