ED small fire pump set (referred to as ED small fire complete set of water supply equipment) refers to a highly integrated electromechanical system with a flow rate of less than 100GPM and composed of electric centrifugal pumps, multi-stage centrifugal pumps (booster pump sets), diesel engine centrifugal pumps, pressure limiting protection Device (safety valve), valve fittings, control system, pressure sensor system, waterless protection device, backflow preventer, soft joint, bypass pipeline, common base, filter, etc. It is a fire-fighting water supply equipment that continuously supplies water to the fire-fighting pipe network at a preset pressure.