The Bettis CB420-SR80 is a 90-degree, spring-return pneumatic rotary actuator (Scotch‑Yoke) in Bettis’ CBB SR-series, designed to convert a compressed-air supply into a precise 90° output for valve control. It operates at 80 psi and weighs roughly 40 lb (18.1 kg), with a CW variant available. The actuator delivers up to 457 Nm of torque at the maximum operating pressure, and about 54 Nm at the minimum operating pressure, supporting a range of quarter-turn valve tasks such as ball and butterfly valves. Built for rugged industrial service, it employs Bettis SR-series geometry for reliable spring-return operation.
