... -10bar power:250W, 370W, 2ph or 3ph automatic diaphragm dosing pumpsautomatic stroke controller transfer pump pump manufacturerProduct ... Frequency conversion motorProtection Degree: IP55Flow Control: Manual operation, Automatic(receive 4-20mA signal)Work ConditionEnvironment temperature: -30°C --- ... mediums, corrosive liquid and dangerous chemical goods.4.The flow can be controlled via adjusting the ...