Rotork, a leading actuator manufacturer and flow control company based in the UK, has extended its CMA range of compact modulating actuators with new sizes specifically designed for reliable automation of larger linear control valves.
The new actuator is capable of a maximum 4,500 lbf (20 kN) seating thrust. The new sizes increase the CMA range modulating thrust performance to 3,000 lbf (13 kN) with a 114.3 mm (4.5”) stroke length for the automation of larger valves with higher pressure ratings. The combined performance of the CMA and the larger CVA ranges enables Rotork’s innovative electrical control valve actuation technologies to be applied to process control applications of virtually any size and description.
CMAs are robust enough to handle extreme temperature swings, corrosive environments and are also available for explosionproof areas. The CML-1500 and CML-3000 models, including those with hazardous area approvals, are watertight to IP68 for temporary submersion (7 metres, 72 hours). The optional Reserve Power Pack (RPP) uses supercapacitors to provide the actuator with enough stored energy to perform predetermined action on mains power failure, such as moving to the fully closed position, fully open position or anywhere in between. Manual operation is available as standard.
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