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A Reducing “Q” Trap (Self-Fit) is a uPVC trap fitting in SWR drainage systems that combines the Q-trap odour-blocking design with a reducing connection between two pipe sizes.
The Q-shaped bend holds a water seal that blocks unpleasant sewer gas from flowing back into bathrooms or wet areas.
Designed to join and transition between two different SWR pipe diameters (e.g., from 125 mm to 110 mm), useful where pipe size changes in a drainage layout.
Installed using solvent cement for secure, leak-proof joints with standard SWR pipes and fittings.
Made from uPVC, which is lightweight, corrosion-resistant and long-lasting, suitable for soil, waste and rainwater applications.
Smooth internal surface helps ensure uninterrupted wastewater flow and limits blockages.
Like other SWR traps, it allows maintenance access when needed, helping keep drainage clear.
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