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🚽 Lock out pests, lock in peace of mind — the ultimate toilet upgrade!
The MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve is a high-performance swing check valve designed for 4-inch toilet outlets. Crafted from durable black polypropylene with marine-grade stainless steel components, it prevents rodent ingress and backflow while reducing light that attracts pests. Tested for over two million cycles, it offers a maintenance-free lifespan of 30+ years, combining reliability with easy installation and removal for professional-grade plumbing protection.
| ASIN | B01819CQ5I |
| Best Sellers Rank | 56,262 in DIY & Tools ( See Top 100 in DIY & Tools ) 116 in Drainage 427 in Pipes, Pipe Fittings & Accessories |
| Brand | Multiflap |
| Connector Type | Flanged |
| Customer Reviews | 4.4 4.4 out of 5 stars (37) |
| Exterior Finish | Polypropylene |
| Inlet Connection Size | 4 Inches |
| Inlet Connection Type | Flanged |
| Manufacturer | Multiflap |
| Material | Polypropylene (PP) |
| Model Number | MF1 ARB1 |
| Number of Pieces | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 4 Inches |
| Outlet Connection Type | Flange |
| Size | 4 inches |
| Specification Met | CE |
| Thread Size | 4 inches |
| Thread Type | NPT |
| UPC | 641243237336 |
| Unit Count | 1.0 count |
| Valve Type | Swing Check Valve |
M**R
Wonderful product
product as described, came on time.
M**R
Brilliant
Works brilliantly after messing about with plumbers etc on a back flow situation and spending a fortune this simple gadget solved everything
M**R
Very expensive for what it is
Just hope it does what it's meant to do. Very expensive for two bits of plastic and q wire spring. Should be about £5. Needed a bit of grease to lubenitnto slide it into the pipe so did spring at same time to protect from corrosion. Also need to be careful enough installing to ensure the shape is not distorted to ensure flap seals.
A**.
WC Barrier
Delivered on time. Ideal for what we needed it for. Would use company again.
M**Y
Works great
As described solved a problem thankyou
A**R
Great service
Speedy delivery and the price was good
A**R
Five Stars
Fantastic thank you
C**Y
Cured our rat problem
This value for money device was an absolute life saver for me as it has totally cured out rat problems It has totally stopped them from being able to come back up along our domestic drain
Trustpilot
Hace 2 meses
Hace 1 mes