Valve such as slide valve and seat valve used in hydraulic line, has sealing gap that is formed between valve piston and valve housing

摘要

The valve (1) has a valve piston (5) that is reciprocally located in valve housing (4). The valve piston is moved between open position and closed position. The electrical voltage is applied between the valve piston and the valve housing. A sealing gap is formed between the valve piston and the valve housing. The electrorheological fluid is activated by the electric voltage. An independent claim is included for method for operating valve.