McAlpine Shower Trap - STW10-M
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Mcalpine Stw10-M 80Mm Water Seal Resealing Shower Trap With Multifit OutletFree delivery in 1–3 days£20.95Visit shop →
Product Information
Full details
The McAlpine STW10-M is an ideal choice for homeowners and professional plumbers seeking a reliable, heavy-duty solution to prevent sewer gases from entering the bathroom. Its primary benefit is a deep 80mm water seal that provides robust protection against back-flow and odor, even if the shower goes unused for extended periods. The primary caveat is that it is specifically designed for 50mm waste holes, meaning users must confirm their shower tray dimensions before purchase to ensure proper compatibility.
All features
| Model Part Number | STW10-M |
|---|---|
| Brand | McAlpine |
Extended Product Information
FAQs
Is this trap compatible with all shower trays?
No, it is specifically designed for shower trays with a 50mm waste hole.
Does the trap come with the grid cover?
Yes, the unit includes the necessary grid and internal components for a complete installation.
How often should I clean the shower trap?
Depending on usage, cleaning once or twice a year is usually sufficient to maintain efficient drainage.
What is the benefit of an 80mm water seal?
The deeper seal acts as a more substantial barrier against sewer gases and is less likely to evaporate during periods of disuse.
Can I install this on a bath?
This model is specifically engineered for shower waste systems and may not fit the overflow or sizing requirements of a standard bathtub.
What tools are needed for installation?
Generally, basic hand tools are sufficient, though a basin wrench may assist in tightening the back nut in tight spaces.
Troubleshooting
Water draining slowly
Remove the trap body and inspect the dip tube for hair or debris blockage; rinse thoroughly.
Unpleasant odor in the bathroom
Check that the water seal is still present; if the shower has been unused for months, run water to refill the trap.
Leak at the connection point
Ensure the gasket is seated correctly and the nut is tightened evenly; replace the washer if signs of wear are visible.
Pros and Cons
Pros
- Superior 80mm deep water seal
- Effective at preventing odors even after periods of disuse
- Versatile multifit outlet simplifies installation
- User-friendly design for easy cleaning access
- High-quality construction from a trusted industry brand
Cons
- Limited to 50mm waste hole shower trays
- Requires proper vertical clearance under the tray
- Larger profile than standard shallow traps
Setup, Compatibility & Care
To install the STW10-M, ensure your shower tray has a 50mm waste hole. The multifit outlet is compatible with most standard plumbing pipe materials.
- Ensure the waste hole is clean and free of debris.
- Place the trap body underneath the tray, aligning it with the aperture.
- Secure the clamping nut and gasket firmly, taking care not to overtighten and crack the plastic.
- Connect the multifit outlet to your existing waste pipe, checking that the connection is watertight.
For maintenance, we recommend cleaning the trap every 6 to 12 months. Simply unscrew the main body, rinse the internal components under hot water to remove buildup, and ensure the seal remains clear of obstructions before reassembly.