Diaphragm Dosing Pump 1.Flow:0-420 lph,Pressure: 0-10Bar 2.Power:370W/550W,50/60Hz. 220V/380V/400V/110V, Diaphragm Dosing Pump Product DescriptionFlow: ... /54205144550 Features1.Very high safety of operation. Mechanical actuate diaphragm. Changeable eccentric drive2.Power off seal,no leakage,with ... life span, the first layer is Teflon anti-acid diaphragm, the second is EPDM stretch rubber, the third is ...