| 摘要 |
PURPOSE: A piston for a solenoid valve is provided to prevent the corrosion of the lower part of a lower piston by the rotation of a guider, to prevent the reduction of the hermetic property of a gas pipe and to prevent the breakage of the piston by increasing the diameter of a combining shaft to connect upper and lower pistons and installing an auxiliary piston in the lower piston. CONSTITUTION: An upper piston(27a) is moved straight inside a valve housing to open or to isolate a gas pipe to be connected with a storage tank while connecting with a valve spring in the valve housing. A lower piston(27c) is inserted lengthwise the upper piston through a combining shaft(27b) and interlocked with the upper piston. An auxiliary piston(27d) opens or seals the gas pipe by interlocking with the upper piston while combining with the lower face of the lower piston to be axially rotated. Thereby, the auxiliary piston rotates the axial direction of a piston(27) though vibration pressure is operated to the side of the auxiliary piston.
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