| 摘要 |
PURPOSE: A ball valve and a ball valve module are provided to proportionally control the flow rate of fluids depending on opening angles of a valve by forming a central through-hole of a ball into a square section shape. CONSTITUTION: A ball valve comprises a valve body(100), a ball(200), and a valve seat(300). An inner passage(110) is formed in the valve body. The ball is connected to a stem(210) and is located inside the valve body. A through-hole(400) having a square section is penetrated through the center of the ball. The valve seat is fixed in the passage and is contact with the outer surface of the ball in left and right sides of the ball in order to maintain airtightness. |
