Plumbright Brass Flanged Backnut - 1 1/4 - BFB114
Best current price£3.50from City Plumbing GB
Best offers
Shopping.co.uk recommended and popular offers
City Plumbing GB£3.50Visit shop Plumbright Brass Flanged Backnut 1 1/4 Bfb114
Visit shopCity Plumbing GB£3.50Visit shop One Offer
1 offer from £3.50
View price history by clicking the chart icon.
City Plumbing GBPlumbright Brass Flanged Backnut 1 1/4 Bfb114
Free delivery in 1–3 days
£3.50
Visit shop
Product Information
Full details
The Plumbright Brass Flanged Backnut is designed for professional plumbers and DIY enthusiasts who require a heavy-duty, reliable fastening solution for 1 1/4-inch plumbing connections. Its primary benefit is the durable brass construction, which resists corrosion and stripping better than plastic alternatives, though users should be mindful that it requires careful manual tightening to prevent over-torqueing on fragile basin materials.
All features
| Model Part Number | BFB114 |
|---|---|
| Brand | Plumbright |
Extended Product Information
FAQs
Is this backnut compatible with plastic sink wastes?
Yes, it is compatible, provided the waste thread size is standard 1 1/4-inch.
Does this nut come with a rubber washer?
The backnut is typically sold as the brass component; ensure you have a compatible 1 1/4-inch washer for a watertight seal.
Can I use this in an outdoor application?
Yes, the brass construction offers good resistance to environmental factors, making it suitable for outdoor sinks as well.
How much should I tighten the nut?
Tighten until it is firm by hand, then use a wrench for a slight, final adjustment. Do not over-tighten.
Is this product compatible with 1 1/2-inch pipes?
No, this is specifically designed for 1 1/4-inch fittings and will not fit larger 1 1/2-inch diameters.
Troubleshooting
Nut is difficult to thread onto the waste
Clean the threads on the waste pipe with a wire brush to remove debris or dried sealant and ensure the nut is perfectly square to the pipe.
Persistent leaks after installation
Ensure a rubber washer is correctly positioned between the flange of the backnut and the basin underside, then verify the nut is tightened evenly.
Pros and Cons
Pros
- Superior durability compared to plastic nuts
- Provides a secure and stable fit due to the flanged design
- Corrosion-resistant material ensures a long lifespan
- Precision threading minimizes the risk of cross-threading
Cons
- Heavier than traditional plastic nuts
- Requires proper tools for tightening to avoid surface damage
- Metal-on-metal contact may require thread sealant in certain applications
Setup, Compatibility & Care
To install, ensure the 1 1/4-inch thread on your waste component is clean and free of debris. Slide the flanged backnut onto the tailpiece, ensuring the flanged side is oriented toward the basin underside. Hand-tighten until snug, then use a suitable wrench to secure it with an additional quarter-turn. Do not overtighten, as excessive force can cause damage to the basin or the threads. For maintenance, periodically inspect for signs of moisture or looseness. Since the component is made of brass, avoid using harsh abrasive chemicals that might strip the finish; a simple wipe-down with a damp cloth is sufficient for cleaning.