Hydraulic valve between pump and tank has pressure chamber connected to shuttle valve outlet, and shuttle valve intakes connected to first and second pressure generators

摘要

The valve has a housing with slide, with one end face charged by the pressure in a chamber, and connected to an electrically controlled first pressure generator. The pressure chamber (5,6) is connected to an outlet (34,37) of a shuttle valve (33,36). The first shuttle vale intake (32,35) is connected to the first pressure generator (10), the second intake (39,40) is connected to a second, mechanical, pressure generator (38), and the valve creates a connection between pressure chamber and first generator. When not activated, a fluid path is formed in the first pressure generator, between the first shuttle valve intake and a tank (20).