Patent ID: 8251097
Filing Date: 2012-08-28
Classification: F15B,F16K,G05D,Y10T

Abstract:
1. A sliding valve, arranged in a housing, in which hydraulic connections (A, T, P) are formed, for regulating a hydraulic pressure at a working connection (A) to values between a pressure at a low-pressure connection (T) and a pressure at a high-pressure connection (P), comprising: a valve sleeve, a main bore of which defines an axis of symmetry (S) and a surface area, a rotationally symmetrical valve slide which is received so as to be axially movable in the main bore and a displacement position of which is influenced by a valve activation force (F) acting upon the valve slide and also by a pressure force acting upon an end face of the valve slide and exerted by the pressure in the working connection and by a force of a restoring spring, wherein the position of the valve slide in a direction of the axis of symmetry (S) in relation to the valve sleeve fixes a size of variable passage cross sections both of a pressure build-up connection between the high-pressure connection (P) and the working connection (A) and a size of a pressure breakdown connection between the working connection (A) and the low-pressure connection (T), wherein control edges are formed which extend peripherally in a circumferential direction on an outer circumference of the valve slide and which cooperate with control edges of the valve sleeve, wherein the control edges of the valve sleeve extend peripherally in the circumferential direction with respect to the axis of symmetry (S) and which are an integral part of a surface area of the valve sleeve.