ZCH series gear pump for fuel dispenser ZCH series Gear Pump, made by cast lron, is applicable to gasoline, kerosene, diesel and gasohol with A type and B type inlets and Air Separator, By pass Valve , Check Valve, lnlet Filter are built in.Model: ZCH-50Speed900rpm Flow Rate45L/min to 55L/min Vacuum≥0.06MPa Noise≤72dB Working Pressure0.180.24MPaModel: ZCH-80Speed900rpm Flow Rate75L/min to 85L/min ...