Patent ID: 6957664
Filing Date: 2005-10-25
Classification: F16K,Y10T

Abstract:
1. A pilot control valve especially for use in mining hydraulics with a valve insert configured as a valve cartridge which can be arranged in a valve accepting boring of a valve block forming a multi-way valve whose valve housing has an inlet for pressure fluid, a connecting opening for a load, an outlet opening into a return feed and an axial boring for the acceptance of a valve closing body provided with a sealing surface, which can be lifted by means of a switching device fixed to the valve housing, against the return force of a spring from a valve sealing seat arranged between an inlet opening and the connecting opening, whereby with the lifting movement of the valve closing body from the valve sealing seat an at least two part closing mechanism arranged between the connecting opening and the outlet opening is coupled for their separation wherein a single part valve closing body has a closing surface and a moving part of the closing mechanism, whereby the moving part comprises a shaft section of the valve closing body which plunges with the lifting movement into a boring section of the axial boring, closing a radial opening.