Designed for industrial process control, maintenance-free Group 42 control drive modulates loads up to 1,000 lb of thrust with no duty-cycle limitations. It comes in variety of configurations from open/close operation to continuously modulating control. Enclosed in weatherproof housing, actuator provides 18 in. stroke, with positioning resolution down to 0.1% of span, and operation from -40 to +185°F. Applications include utility boiler burner air registers and overfire air ports.