... free Smooth, Pulseless Delivery Strong chemical resistance Magnetic Drive DC Mini Gear Pump (DC brushless motor, outside controller) Introduction: 1. Using ... C (except for the freezing) 6. Working way: continuous working 7. Apply the media of: acid and alkali, salt, organic solvents ... " means the gear of the pump with the height of 4mm, "09" means 9mm, "13" means 13mmDimension (mm) ModelMax Head ...