Features: pneumatic rotary actuator, spring return, for 6" valves.Mount directly to keystone butterfly valves (sold separately) to provide remote operation. No brackets are required. Spring return models close automatically when air is shut off. 1/4" fpt air connections. Rated supply pressure is 120 psi (150 psi max.). Sleeve adapters included.Get more information please contact us. At the same time, we still can offer the items as below: Keystone spring return pneumatic actuator ke790-300s Keystone spring return pneumatic actuator ke790-200s Keystone pneumatic actuator mrp Keystone double acting pneumatic actuator ke790-300k Keystone pneumatic actuators mra Keystone pneumatic actuator 79u Keystone double acting pneumatic actuator ke790-200 Keystone double acting and spring return mrp Keystone spring return pneumatic actuator ke790-600s Keystone spring return pneumatic actuator ke790-300s Keystone spring return pneumatic actuator ke790-200s