Patent ID: 7600531

Claim:
A hydraulic valve, comprising: a central guide having unsymmetrically distributed through-openings; a check valve, the check valve comprising a band which is shaped into a closed ring with overlapping free ends, said closed ring being mounted in a freely floating rotatable manner on an inner surface of the central guide; and a pressure connection (P) having an external encircling connection groove located on an outside of a section of the central guide; wherein: the closed ring is a band which is free from openings and, on the section of the central guide, closes the unsymmetrically distributed through-openings to the central guide in the event of blowback pressure differences; the ring is mounted in a manner free from locking in an encircling internal double-stepped groove of the section of the central guide, and the double-stepped groove is located beneath the encircling connection groove of the pressure connection (P) and comprises a deep groove and a shallow groove.