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August 1, 2012

These actuators feature a permanently lubricated drive train

The new CMA series of all-electric modulating actuators are sized for linear, quarter-turn and rotary control valve and pump applications requiring precise position control and continuous modulation. The units can be powered by single-phase or d.c. supplies, eliminating the need for air hoses and compressors used with similar pneumatic control-valve actuators. The CMA series features a permanently lubricated and maintenance-free drive train, as well as a 4–20-mA loop-powered feedback signal and multiple digital communications options. The resolution is 0.25% on linear and quarter-turn applications, and 2 deg on the multiturn configuration. Rotork Controls Inc., Rochester, N.Y.

www.rotork.com

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