Valve arrangement, esp. for driving hydraulic load on mobile machine - has non=return valve between control valve and press. sensing line or press. chamber

摘要

The valve arrangement has a direction and speed controlled distribution valve with a measurement aperture working with a press. balance controlling the press. medium flow. The press. balance has a control piston, a press. chamber and a choke via which the chamber is subjected to press. downstream of the measurement aperture. A control valve connects the chamber or the press. sensing line contg. the choke to the pump press. line. A non-return valve (103) with blocking direction towards the control valve (100) is arranged between the control valve and the press. sensing line (7) or press. chamber (57). ADVANTAGE - Valve arrangement is improved wrt. earlier versions by addition of non-return valve.