GH and GHL-Series gas-over-oil (gas/hydraulic) valve actuators use high pressure process gas to provide the energy required to power the valve actuator automating the valve. To provide increased safety and reliability, the process gas acts upon hydraulic fluid stored in gas-over-oil tanks, creating hydraulic pressure that is subsequently used to power the hydraulic valve actuator. As standard, the gas-over-oil control system provides local open and close control using either the high pressure process gas, or via a hydraulic hand pump. Numerous additional control system options are available; including linebreak detection (rate of drop and high/low) and remote control.
Automation of rotary and linear valves in gas transmission lines.
Supply Pressures
13 to 250 Barg (90 to 3625 psig)
Torque & Thrust Outputs
GH-Series: 200 to 680,000 Nm (1,770 to 6,018,000 lb in)
GHL-Series: Up to 289,134 N (65,000 lbf)
Looking for a competitive valve automation solution? Request a product quotation to find out how our technology can benefit your operation.
Reduce your process downtime by stocking spare parts ahead of your next scheduled shutdown. Request a spares quotation.
Watch the video tutorial to learn about High Integrity Pressure Protection Systems (HIPPS).
All the traditional methods for controlling subsea PLEM valves used in CALM buoy tanker loading and offloading systems have significant operational issues; watch the video to learn how The Autonomous Shutdown Valve comprehensively addresses them.
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