Overview：Q-type part of the rotary valve electric device output torque range of 50 ~ 5000N.m, can not meet the large diameter butterfly valve and ball valve to do 90 degrees rotary valve torque requirements, so large diameter butterfly valve, ball valve and so on are Z-type multi-turn valve electric The device is equipped with a two-stage worm gear (ie, superposition structure), the model is expressed as DQ type, to 90 degrees rotation requirements, the output torque range of 6000 ~ 165000N.m ..