Presto ChemTech offers Pitched Blade Turbine. Presto ChemTech offers a range of Super Impellers, Hydrofoils, Axial, Radial and many more. The Pitched Blade Turbine is a 45 degree pitched blade impeller. The Pitched Blade Turbine produces less axial flow than hydrofoils but higher shear forces than hydrofoils. It is best suited when both flow velocity and fluid shear are required. The Pitched Blade Turbine is also used for applications where the viscosity changes over a wide range causing the flow regime to vary between turbulent and laminar flow.