| 摘要 |
PURPOSE: The easily-cleanable operator attached to the lower end of a U-shaped pipe for preventing the counterflow of odor is provided to remove impurities settled down on the inner bottom of a U-shaped pipe easily. CONSTITUTION: The easily-cleanable operator attached to the lower end of a U-shaped pipe for preventing the counterflow of odor comprises the steps of forming a hole to the existing U-shaped pipe, then attaching an operator such as a rustproof bolting device or a detachable rubber stopper, wherein the length of a bolt or a rubber stopper isn't protruded to the inner bottom of the U-shaped pipe to let water flow smoothly.
|
