Unbalanced reversing valve for pneumatic diaphragm pump

The utility model relates to the technical field of production and manufacturing of pneumatic diaphragm pumps. The non-balance reversing valve for the pneumatic diaphragm pump comprises a valve body,a valve element is slidably connected to the interior of the valve body, a center body is fixedly installed on the left side of the valve body, a shaft is movably installed in the center body, and a guide rod is movably installed in the center body and located below the shaft. Meanwhile, compressed air in the air chamber on one side is exhausted through the first air inlet groove, the second overflowing hole, the first groove and the exhaust port; when the shaft and the guide rod move to limit positions; compressed air at the bottom of the valve body is exhausted to the atmosphere through thepressure relief hole, the crescent groove and the exhaust hole to be subjected to pressure relief. And meanwhile, compressed air at the top of the valve element pushes the valve element to descend, the second through-flow hole