With the material that is compatible with the fire-resistant oil and dehydration in vacuum、mew particle-filter for removing pollutant,the technique for aborption of the acid constituents in the treated oil,series KYJ oil-filter for fire-resistant oil are especially designed for the use of the fire-resistant oil.They have the functions of purifying and filtering the qualified fier-resistant oil in advance,re-purifying and the mid-degree pollutant fire-resistant oil. The series are the indispensable filter equipment when fire-resistant oil is using.They can be applied to operate on-line,filter movable and add new oil,and extend the lifetime of the fire-resistant oil,maintain security of the machine and save power.