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The McAlpine STW3-RB is an essential plumbing component designed for homeowners and professional installers looking to manage shower waste effectively. Its primary benefit is a reliable 19mm water seal that prevents foul sewer gases from entering the bathroom, though users should note it is specifically engineered for shower trays with a 50mm waste hole. This trap features a durable, removable design that simplifies routine maintenance, ensuring your drainage system remains clear and odor-free.
| Model Part Number | STW3-RB |
|---|---|
| Brand | McAlpine |
This trap is designed specifically for shower trays with a 50mm waste hole.
No, this product is specifically engineered for shower waste management and is not suitable for kitchen sink applications.
It is recommended to clean the trap whenever you notice a reduction in drainage speed to prevent total blockage.
The unit includes the necessary threading and seals to connect to standard 1.5 inch BSP shower waste outlets.
The trap is made of high-quality plastic, but you should avoid caustic chemical drain cleaners to ensure the longevity of the seals and housing.
Remove the trap cover and clear any hair or soap buildup from the internal assembly.
Ensure the washer is seated properly and tighten the threaded connection by hand; do not overtighten with tools as this can crack the plastic.
Check that there is sufficient water in the trap to maintain the seal; if the shower has not been used in a while, run water to refill the trap.
To install, ensure your shower tray has a standard 50mm diameter waste hole. Thread the 1.5 inch BSP connection securely to your waste outlet, ensuring the washers are positioned correctly to prevent leaks. Periodically check the seal integrity after installation. For care and maintenance, unscrew the trap cover periodically to remove accumulated debris. Avoid using harsh chemical drain cleaners, as these may damage the plastic housing over time; manual removal of blockages is the recommended approach for this model.
