| 摘要 |
A plastic tank fitting having a circular flange portion molded integrally with the exterior surface of the plastic tank side wall adjacent to the tank bottom wall, and concentric with a drain opening in the tank side wall. Approximately 240 DEG of the upper portion of the flange is flush with the tank side wall, while approximately 120 DEG of the lower portion of the flange extends downwardly from the tank side wall adjacent the tank bottom wall. A flange and associated pipe fitting are bolted to the molded circular flange portion.
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