Rotork RH-Series


Rack and pinion actuators often offer the most economical solution for quarter-turn valves that have a fairly constant torque requirement throughout the stroke.

RH (hydraulic) actuators are available in five body sizes to produce torque output up to 3,400 Nm (30,000 lbf-in) at operating pressures up to 250 bar (3,600 psi). They are available in either double-acting or spring-return configurations.

  • Heavy-duty cast iron bodies
  • Electroless nickel-plated cylinders for corrosion resistance.
  • Nickel-plated, anti-blowout pinion.
  • Valve mounting dimensions per ISO 5211 DIN 3337.

Product Brochure:
RH Flyer

Dimension Data:
RH General (RH_STD)
RH Valve Coupling
RH Microswitch Coupling
RH Power Control Coupling 

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Fluidcontrol Oy was founded in 1989. We have served Finnish industry already for 20 years. Our clientele consist of machine builders, petrochemical-, paper-, wood-, pulp-, and chemical industry in general. Refinery- and power plant technology is very important field for us, so challenge us!