The Q3 PRO HVLP spray system is the quietest 3-stage turbine available today. The Q3 PRO three-stage turbine develops approximately 6 psi. This system is ideal for cabinet makers and furniture refinishers. Perfect for any type of fine-finishing. Fuji Spray also manufactures the Q4 PRO system which is identical to the Q3 but with a more powerful four-stage motor. The Q4 PRO is recommended for spraying latex house paints.