... can reach Grade-6(NAS1638) after purification Usage of ZL-20 oil recycling: Filtrating lubricating oil, including hydraulic oil, ... condition oil, gear oil and so on.Description of ZL-20 oil recycling: Reliably remove deleterious substances moisture, mechanical impurity ... Para.`ItemName of para. ZL-20Tech. Para.Nominal FlowL/m 20Working VacuityMpa -0.098~-0.06Working PressureMpa ≤0.5TEMP Range ...