... 1.vacuum oil purifier series 2.stainless steel body anti-corrosi ZLT Stainless Steel Phosphate ester fire-resistant oil purifier ... vacuum dewatering, multi-stage filtration system and new adsorbentStainless steel machine body, pipes and filtering components, reliable, anti- ... protective system, which connect oil pump, heater and liquid level sensor, avoiding blank heating, blank pumping, oil leak ...