Hydraulic seat and holding valve for hydraulic drives has valve piston swivel mounted relative to conical valve seat fixed in valve housing between load and unloaded chambers and with conical circumference to ensure seal

摘要

The valve has a seat pairing (12) for closing the load chamber (7) from the unloaded chamber (6) and comprises the valve seat formed as a cone zone fixed in the valve housing between the two chambers, and the valve piston which is fixed on the valve shaft (5) and is conical round its circumference. The valve piston is mounted to swivel relative to the valve seat. The angle of conicity of the valve piston is smaller than that of the valve seat.