Patent ID: 6293513
Filing Date: 2001-09-25
Classification: F16K

Abstract:
Servo-controlled magnetic valve having a main valve with a main closure member which can be raised from a main valve seat by an operating stroke of a servo piston, the main valve seat being fixed relative to the housing, and having a servo valve with a servo closure member which can be raised from the servo valve seat when, after an empty stroke, a solenoid plunger entrains a slide member that carries the servo closure member and, as a result, releases pressure to a low pressure side from a pressure chamber on a side of the servo piston that is remote from the main valve seat, the servo piston being an annular piston that surrounds an insert that carries the main valve closure member and the servo valve seat and which, during the operating stroke, entrains the slide member by means of first stops and the insert by means of second stops.