| 摘要 |
<p>PURPOSE:To regulate waste water flow so as to prevent clogging when making waste water flow out of a cross pipe or a vertical pipe into the vertical pipe or the cross pipe via a bent pipe. CONSTITUTION:A bent pipe 4 is connectively provided between a vertical pipe 2 of circular cross section and a cross pipe 3 which is tapered from its both side portions 3c, 3c to its pipe bottom portion 3a. A vertical pipe connecting portion 41 at which the bent pipe 4 is connected to the vertical pipe 2 is formed with the same shape as the vertical pipe 2 and a cross pipe connecting portion 42 for connection to the cross pipe 3 is formed with the same shape as the cross pipe 3. The bent pipe 4 is formed with a continuous curved surface whereby the sectional form of the vertical pipe connecting portion 41 gradually approaches the sectional form of the cross pipe connecting portion 42.</p> |
