PQA/PQB series air breather filter protect your hydraulic system from harmful airborne contaminants during normal breathing of the reservoir as fluid levels fluctuate and other factors. To help insure system cleanliness integrity, the breather should become a part of normal maintenance procedures and be changed whenever the system hydraulic filter element filters are replaced. Working substance: air mineral - base fluid, emulsion, water-glycol, phosphate ester Operating temperature: -25~110
