... .7m 2.Capacity: 11-38m3/h 3.Single-stage, single-suction 4.Energy-saving, high efficiency Main Technical Datas of 50ZJL ... .20.40.40.5Introduction of ZJL Series PumpsSpecificationssingle-stage,single-suction, energy-saving,high efficiency, little vibration,low noise, lightweight,high ... , steel, mine, coal and building materials industry. 50ZJL-30 industrial irrigation cooling pump for oil