Rotork RH Hydraulic Rack & Pinion
Rotork
Produktnummer: RH
Hersteller: Rotork
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Description for Rotork RH Hydraulic Rack & Pinion
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 rack and pinion hydraulic actuators are engineered to operate ball, butterfly, plug and other quarter-turn valves for either on/off or modulating service. The heavy-duty construction and compact design make this product ideal for skid manufacturers as well as offshore and process applications which require robust yet space saving valve actuation solutions.RH actuators are available in five body sizes to produce torque output up to 3,700 Nm (29,900 lbf.in) at operating pressures up to 250 bar (3,625 psi). They are available in either double-acting or spring-return configurations.Heavy-duty cast iron bodiesElectroless nickel-plated cylinders for corrosion resistanceTotally enclosed weatherproof housingValve mounting dimensions per ISO 5211 DIN 3337Complies with EN60529 (1991) + (A1:2000) for IP67MCertified suitable for use in SIL3 as a single device in accordance with IEC 61508Actuators certified to ATEX 2014/34/EU and PED 97/23/ECRH actuators are designed for some of the most challenging valve actuation applications on earth. They are an excellent choice for the demanding requirements and adverse conditions found in applications for mining and offshore. The balanced design has a very compact footprint for a given output. Output torque to 700,000 Nm (6,200,000 lbf.in). Units with output torque higher than 700,000 Nm (6,200,000 lbf.in) are available upon request.Standard rotation 90° (+/-5°)Totally enclosed weatherproof housingCarbon steel constructionElectroless nickel-plated cylinders with redundant piston sealsDouble acting with four hydraulic cylindersDual rack designFemale input shaft allows direct mounting to valve topworks
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