Fuel purification systems encompass the equipment and processes used to remove contaminants — including particulates, water, microbial matter and surfactants — from aviation fuel prior to combustion, covering coalescer-separator units, centrifugal purifiers, electrostatic precipitation technology, and filtration media conforming to DEF STAN and ASTM D1655 cleanliness standards, typically integrated within airframe or ground-support fuel conditioning circuits.
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