|Gas Over Oil Actuator|
With the hydraulic oil energized by the pipeline gas, these actuators can operate with gas pressures up to 2000 PSI and are typically used in tandem with scotch yoke actuators (in ROTEX case the DRS, DRV, HYV or any other make of actuators). The hydraulic oil bathes the internal actuator mechanism, preventing the internal corrosion, and providing maintenance-free, high cycle and long life.
Gas-Over-Oil include a secondary storage tanks for up to 3 additional operations, in case of loss of the primary gas supply. The actuators can be used to power 1/4 turn actuators, or linear actuators for rising stem valves.
Gas over oil actuators general features include:
- Line break control integrated with manual reset function. On exceeding the leak rate, the LBC valve operates shutdown valve and closes the main valve. Requires manual reset.
- Torque control ensures that the actuator does not exceed the maximum seal torque for stem can be supplied.
- Manual hand pumps.
- Gas filtration and dehumidification.