| 摘要 |
PURPOSE:To maintain satisfactory sealing action for a long time by supporting a valve ball with a valve rod and others not to displace a rotary shaft and urging a valve seat member against the valve ball by an elastic means. CONSTITUTION:End members 2, 3 respectively provided with an inlet 4 and an outlet 6 is threaded into a main body 1 provided with an outlet 5 to constitute a casing provided in the inside with a valve chamber 35. The inlet 4 and both outlets 5, 6 are formed in the same plane, and a valve shaft hole 30 and a support shaft hole 27 are formed coaxially and perpendicularly to the plane. And a valve shaft 7 is fitted on the center axis of a valve ball 34 provided with a L-shaped valve hole 28, and to the large diameter portion of said valve shaft 7 fitting in a valve shaft hole 30 is attached an O-ring 11 for seal. The main body 1 and end members 2, 3 are formed on the outlet and inlet with annular projections 31-33 respectively in which are fitted slidably valve seats 14, 18, 22 and which are elastically urged toward the valve ball 34 side by spring washers 17, 21, 25. |
