Valvcon™ Quarterback™ QB-series quarter-turn mechanical spring back-up electric actuator
The Valvcon QB-series is an extremely versatile, quarter-turn electric actuator with integrated mechanical spring back-up power. Designed for a wide variety of valve and damper applications, the actuator includes a brushless DC motor for reliable, continuous-duty performance and is available in both NEMA 4/4X and NEMA 4/4X/7&9 configurations. Notable standard features include multiple power and control options, integrated mechanical spring back-up power, holding brake, heater/thermostat, and CSA (C US) certification.
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