... / 400V/110V, 50/60HzDrive System: 2 phase motor, Anti-explosion motor, Frequency conversion motorProtection Degree: IP55Flow Control: Manual operationWork ... the life span, the first layer is Teflon anti-acid diaphragm, the second is EPDM stretch rubber, ... of the body.PurposeWidely used in petroleum, chemical industry, electric power, metallurgy, mining, shipbuilding,light industry, agriculture, ...