Overview：MSB mine jet pump assembly is composed of SB type jet pump, MGQ mine small diameter high voltage electric valve, positive and negative pressure sensor, pipe wins tube components. Mainly for large and medium-sized pumps to remove the end of the valve after the suction on the water, in order to achieve the pump bottomless valve operation. Both to reduce labor intensity, but also to achieve significant energy-saving effect, power consumption per tonne to save about 5% to 27%.