The MTI® valve is used in the resin line and controls the resin infusion by means of pressure. During the infusion it represents for the resin infusion a counter-pressure to the under pressure in the part. If this counter-pressure is too big, the valve closes, the resin infusion stops, and no more resin enters the part.
The valve is adjusted that the counter-pressure becomes too great for the resin at precisely the point when the necessary under pressure in the part for the fibres to reach an optimum height to be covered in resin is achieved thus also achieving an optimum fibre to volume ratio. Supervising the resin supply is not necessary any more, provided that enough resin exists.