ZJA Two-Stage High Efficiency Vacuum Oil Purifier Series for Transformer oilUse:ZJA is widely used in ... filling oil into transformers and circuit breakers under vacuum condition.● Precise filtration system, high-quality filter element, multi-stage filtration with ... available.● Available in mobile option, immovable option and trailer.● Oil purifier can be made in hermetical, canopy-covering, open and ...