T285 6 Automatic cut off gas ball valves are implemented on turbo generators on Mexican Refinery Ing. Antonio M. Amor. INTESISTA N Series actuators spring return fail close units along with Indave ball valves several sizes 2”-300#, 1”-150#, 3”-300#, 1 1/2”-150# will be installed to control the gas inlet for turbo generators. INTESISTA actuators provide Operational Reliability for the plant. Actuators made in México.