The series JM mechanical diagram metering pumps adopts cycloidal-pin wheel reducer.The pump head materials include engineering plastics and stainless steel.Maximum discharge pressure is 1.3MPA.Capacity ranges from 90 to 1500 I/h.Accuracy for capacity ranges from 90 to 1500I/h.Accuracy for capacity adjustment is ±5%.Turndown ratio is 1:10 .The pump is an ideal chemical feed system and water treatment equipment,widely used for various corrosive liquids and water treatment in chemical,electric power,environmental protection,and public works.