The electromagnetic pulse valve (also called the diaphragm valve) is the compressed air “switch” of the dust-cleaning jet system of the pulse bag-house. Controlled by the output signal of the pulse jet controller, they realize jetting dust cleaning for the bag filter row by row (or chamber by chamber) to keep the operating resistance of the bag-house within the set range, thus guaranteeing the high processing ability and dust-collecting efficiency of the bag-house.