| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a cost of manufacture in a casing, so as to avoid partially large seal wearing. SOLUTION: A pipe turnout is provided with a plug 6 having a peripheral surface curved in spherical shape and an opening for at least one passage. The plug can be rotated around a rotary shaft line 10 in a casing 1, 2. This casing 1, 2 has one inflow port and two outflow ports. The plug 6 is formed by a spherical base in a spherical capacity partitioned by a large circle 8a, a respective opening of the passage is projected along a virtual line connecting the center of a respective opening surface, when the opening is at least almost partitioned by almost an equivalent elliptic shape, a shape of the casing, in its turn, manufacture of the casing is simplified. This virtual line is deviated relating to the rotary shaft line 10 of the plug 6.</p> |
