The trap dip refers to the lowest, U-shaped bend in a plumbing trap where water collects to create the water seal. This part of the trap is essential for blocking sewer gases while allowing wastewater to flow through. The trap dip must be deep enough to maintain an effective seal but not so deep that it slows down drainage or creates clogs. Regular maintenance, such as flushing with hot water or using drain cleaners, helps prevent debris buildup in the trap dip and ensures consistent drainage.
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