Decompression device that includes a means for bypassing the decompression means and the pressure-reducing means

摘要

The present invention is provided with a suitable body (2) that has a coolant (14) passing through it, the body (2) is provided with a suitable pressure reducing means (3) for reducing the pressure of the coolant, vacuum and means for bypassing the means (3) (5), and that can be opened when the pressure from the bypass section (5) upstream the coolant is lower than a predetermined threshold value means (5), to accommodate to a decompressor (1) for a coolant circuit which is mounted on a vehicle (15). The present invention also encompasses a circuit expansion device (1), a mode for operating the circuit relates. The present invention may be used in automobiles.