Direct Gas Valve Actuators

Overview

DG-Series direct gas valve actuators are a simpler and more cost effective solution than gas-over-oil (gas/hydraulic) valve actuators. Rather than use the process gas to pressurise hydraulic fluid to provide the energy to operate the actuator, the process gas acts directly upon the valve actuator’s piston. To ensure long and reliable operation, Paladon Systems ensures that, whatever the quality of the process gas, it is sufficiently filtered and conditioned before entering the control system and valve actuator. Numerous additional control system options are available; including linebreak detection (rate-of-drop and high/low) and remote control.

Applications

Automation of rotary and linear valves in gas transmission lines.

Operating Ranges

Supply Pressures

13 to 250 Barg (90 to 3625 psig)

Torque & Thrust Outputs

DG Series: 200 to 500,000 Nm (1,770 to 4,425,000 lbs.in.)

DGL Series: Thrust Output: Up to 222,000N (50,000 lbs)

Key Features & Benefits

Third party approved for use in SIL 3 certified systems

Scotch-yoke and linear piston actuator configurations

Double-acting and spring-return configurations

Low or high pressure control system packages available

Full enclosed manifold controls with lockable cover

Hydraulic manual override standard

Local operation using power gas standard

Speed control in both directions standard

Actuators certified to IP66M

Actuators certified in accordance with PED 93/27/EC

Additional Resources

Service Manual