Double-pole double-throw switch type valve position indicator

The utility model provides a double-pole double-throw switch type valve position indicator, which is characterized by comprising two pairs of microswitches, a pair of fully-open cams and a pair of fully-closed cams, the fully-open cams and the fully-closed cams are mounted on a rotating shaft, and the microswitches are mounted on the rotating shaft. The pair of fully-opened cams corresponds to one pair of microswitches, the pair of fully-closed cams corresponds to the other pair of microswitches, one pair of microswitches sends out a pair of fully-opened signals, and the other pair of microswitches sends out a pair of fully-closed signals, namely two paths of signals. When in use, one path of signal is directly transmitted to an upper computer independent of the actuator, and the other path of signal is reserved for the execution equipment to be used, so that double-pole double-throw is realized. Power failure of execution equipment is prevented, and the upper computer can still monitor the position of the va