Hiross 009Q is a Class Q filter element for compressed air precision filters from the Italian brand Hiross. It has a rated flow rate of approximately 0.9 Nm³/min, a filtration accuracy of 5 μm, and a residual oil content of ≤5 ppm. It is used to remove water mist, oil mist, and solid particles ≥5 μm from compressed air.
It is usually written as 009Q (or Q009).