Hydraulic or pneumatic pressure control device and its application in devices regulating the pressure of tires of vehicles in motion

摘要

The device comprises, in a housing formed from two parts (102, 103), disposed on opposite sides of a diaphragm (104), three orifices, namely an orifice (105) capable of receiving the low and high pressure and ensuring the purge, the second (107) connected to the pneumatic tire, and the third (106) of large diameter for a rapid escape, an escape valve (110) being normally closed while a passage (116) between the first and second orifices is normally closed and a passage (121) of large diameter between the second orifice and the escape valve (110) is normally open. Application in the measurement, the inflation and the deflation of vehicle pneumatic tires.