Urea sender unit

A sender unit for conveying a solution of urea into a vehicle, the sender unit comprising:

• an upper portion configured to be inserted in an opening of a tank for said urea solution, said upper portion defining a first and a second orifice adapted to be connected to an inlet pipe and to an outlet pipe forming part of a conditioning circuit;
• a heat exchange pipe connected to the first and to the second orifice and adapted to be at least partially immersed in said urea solution;
• sensor means adapted to detect a temperature of said urea solution, and
• an electrical interface unit connected to said sensor means and configured to exchange electrical signals with an external electronic unit;
• and
• an electro valve carried by said upper portion and connected to said interface unit and configured to control the flow of said conditioning fluid in said conditioning circuit;
• wherein said electro valve is a three-way two-position valve configured to provide a flow rate of urea solution in a range between 0 and 600 l/h with a pressure drop that varies between 0 and 300 mbar.