| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage trap which is simple and excellent to use, is required merely to be placed directly on a base such as a concrete, a floor or the like, needs less space and is suitable as a confluence system and a confluent joint to a rise pipe for an apparatus added for a remodeled house as well as for a newly built house. SOLUTION: The confluence system to the rise pipe with a drainage trap is divided into two chambers for composing a closed space. The chambers are both open and connected at top for forming the drainage trap. To a first chamber 1, a drainage pipe 4 for the apparatus the upstream is connected while a drainage pipe of a downstream is connected to a second chamber 2. Also, the drainage pipe 5 of the downstream is coupled to a drainage rise pipe 10. COPYRIGHT: (C)2006,JPO&NCIPI
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