... series chemical metering Pump dosing pump,metering pump flow:0-130L/H,pressure:4-10bar power:60W, AC: 220,380,DC:12\24V JBB series ... Machnical Diaphragm Dosing Pumpchemical metering pumpmetering pump, dosing pumpProduct DescriptionFlow:0-130 ... stroke or the motor frequency.PurposeWidely used in petroleum, chemical industry, electric power, metallurgy, mining, shipbuilding,light ...