MULTIS HYDRO MJ850 Series is suitable for the equipment which rotates at a high speed and is designed for the flowing of two kinds of fluids. Two different fluids never intersect each other or mix-flow in case of the leak inside the rotary joints as they build their own sealing. This is recommended for the case of two fluids that should never be mixed or have an extreme gap in terms of pressure. When the leakage occurs, the fluids flow outside through the drain port.