Rotork CQ Range Compact Helical Actuators
Rotork
Numéro de produit: CQ
Fabricant: Rotork
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Datasheets for Rotork CQ Range Compact Helical Actuators
Description for Rotork CQ Range Compact Helical Actuators
The CQ range provides an innovative fully-concentric and balanced actuator design for quarter-turn valves. The design features a helical mechanism that transforms linear piston motion into quarter-turn valve stem rotation. CQ actuators provide a much higher torque output for a given footprint than scotch yoke designs typically utilised to operate many quarter-turn valve types. It is therefore ideally suited for installation in confined spaces. Further, Rotork’s unique helical pin design provides higher efficiency than a helical gear mechanism utilised by other valve actuator manufacturers.As standard, the CQ torque output profile, like that of a scotch yoke actuator, is engineered to parallel the torque demand profile typically found with popular quarter-turn valve types. The CQ design however is unique in that the torque profile can be custom engineered and manufactured to meet specific, non-standard valve torque requirements.In our experience, the CQ standard range of sizes is suitable for applications that require a pneumatically powered actuator with torque demand less than 150,000 Nm. However, we also engineer CQ actuators with greater output and/or hydraulic power. Please apply to Rotork for these applications.Weatherproof housing suitable for harsh environmentsApplications: SIL3, functional integrity, safety, limited spacePneumatic, single and double-actingTorqueUp to 150,000 Nm (1,300,000 lbf.in) (higher upon request)Operating MediumInstrument airMineral oilSweet, clean and dry natural gas / nitrogenDesign Pressure12 barg for the pneumaticStroke Adjustment90° ± 5° (Custom rotations beyond 90° upon request)Temperature RangeStandard: -30 to 100 °C (-22 to 212 °F)PED Compliant: -20 to 160 °C (-4 to 320 °F)Low: -40 to 160 °C (-40 to 320 °F)Extreme Low: -60 to 160 °C (-76 to 320°F)CertificationIP66M/IP68, PED, IECEx, EAC, suitable for SIL3 applicationActuators certified to ATEX 2014/34/EU
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