Inclined mixers are specially designed to work in the aggressive environment of biogas reactors. Mixer propellers are manufactured with the help of special tools that ensure millimetre angle accuracy blade after blade. Electric motor-driven mixers are designed for work in the explosion hazard environments of EX Zone 1 or EX Zone 2. All components, including the sealing membrane (gastight) for drive tube, are UV-resistant. The propeller mixer is fitted from the outside. Propeller mixer is supported by two top links or optionally by rack-and-pinion jack and can be set steplessly to any angle of inclination. Drive shaft, propeller and sealing plate are made of stainless steel. The othe rname for mixer is agitator.