| 摘要 |
PURPOSE: A fluid opening/closing method and a device thereof are provided to increase the service life of a valve by using surface contact on a part in which a solenoid valve is opened and closed. CONSTITUTION: A fluid opening/closing method comprises a solenoid valve, a plunger(205), a coupling(206), and a body(200). The solenoid valve blocks the inflow of the fluid from an inlet. The plunger comprises a middle part having smaller diameter than the diameter of both ends. A plurality of O-shaped grooves are formed at the coupling. The coupling comprises an inner path. An input port(241) and an output port(240) are formed at the body. |
