Hydraulic, double-acting actuators. Balanced, compact design. Totally enclosed weatherproof housing to IP68. Electroless nickel-plated cylinders with redundant piston seals. Precision machined rack and pinion mechanism. Female input shaft allows direct mounting to valve topworks. Torque output to 5,650,000 Nm (50,000,000 lbf.in). Supply pressures to 207 bar (3,000 psi).
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