By-pass valve

1. A by-pass valve to regulate the flow of gas towards two areas of a device, comprising a body coupled to said device with an internal chamber in which the inlet gas is received through an inlet pipe, and two outlet pipes directed towards said areas, a closing member of said outlet pipes assembled on a rotating pin and actuation means of said closing member, wherein:

a) the body has a planar face with an access opening to its internal chamber; and

b) said rotating pin with the closing member and its actuation means are assembled on a planar plate which is fixed to said planar face of the body, the closing member being duly positioned so as to close the outlet pipes when coming into contact with planar areas configured at the beginning portions of said pipes.

2. A by-pass valve according to claim 1 , wherein the body is configured such that the outlet pipes can be closed by the closing member acting at a working angle of less than 45.degree.

3. A by-pass valve according to claim 1 , wherein the closing member comprises two blades with a triangular prism shape, fixed at one of their sides to the rotating pin and joined to one another at the opposite side.

4. A by-pass valve according to claim 1 , wherein the actuation means of the closing member include specific means which allow placing it in any intermediate position between the outlet pipes, enabling proportional control of the gas directed towards each one of them.

5. A by-pass valve according to claim 1 , wherein the device to which it is coupled is an EGR system heat exchanger with an integrated by-pass pipe in which the two areas are the cooling module and the by-pass pipe.

6. A by-pass valve according to claim 1 , wherein the device to which it is coupled is a two-passage EGR heat exchanger in which the two areas are the cooling module and the exhaust pipe leading to the intake manifold of the engine.