---
product_id: 53533786
title: "McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black"
brand: "cabinetsforbathrooms"
price: "330 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Cabinetsforbathrooms"
url: https://www.desertcart.ro/products/53533786-mcalpine-anti-cross-flow-and-rodent-barrier-valve-for-wc
store_origin: RO
region: Romania
---

# 4"/110mm universal fit Anti cross-flow valve tech Rodent barrier protection McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black

**Brand:** cabinetsforbathrooms
**Price:** 330 Lei
**Availability:** ✅ In Stock

## Summary

> 🛠️ Lock out pests, lock in peace of mind!

## Quick Answers

- **What is this?** McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black by cabinetsforbathrooms
- **How much does it cost?** 330 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/53533786-mcalpine-anti-cross-flow-and-rodent-barrier-valve-for-wc)

## Best For

- cabinetsforbathrooms enthusiasts

## Why This Product

- Trusted cabinetsforbathrooms brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Seamless 4" Fit:** Perfectly engineered for standard WC outlets, ensuring hassle-free installation and a snug fit every time.
- • **Cross-Flow Control:** Prevents back-to-back toilet cross-flow issues, maintaining optimal sanitation and plumbing efficiency.
- • **Rodent Defense Mode:** Specially designed to block unwanted pests, giving your bathroom peace of mind and a hygienic environment.
- • **Easy Install Barrier:** Quick to fit with no extra tools or batteries needed—upgrade your bathroom protection in minutes.
- • **Durable Black Polypropylene:** Crafted from robust polypropylene for long-lasting performance and sleek, discreet aesthetics.

## Overview

The McAlpine Anti Cross-Flow and Rodent Barrier Valve is a 4" (110mm) black polypropylene valve designed to prevent cross-flow in back-to-back WC installations while effectively blocking rodents from entering your bathroom through sewer outlets. Easy to install and highly durable, it offers a practical solution for maintaining hygiene and plumbing integrity.

## Description

Barrier for WC Outlet - easily fitted

Review: Perfect for rodent problems! - I struggled to source this at both B&Q and Screwfix (genuinely perplexed the staff in Screwfix) before finding it via desertcart and was good value. This worked perfectly for a rodent issue with a downstairs toilet leading directly into a sewer. The barrier valve worked perfectly and fit tightly within the sewer pipe, seems to have eradicated the problem and worked very well.
Review: Four Stars - Seems to work, not RATs have entered my bathroom since fitting.

## Features

- 4"/110mm
- Will prevent cross-flow if fitted to WC pans that are installed back to back
- For use where special measures are necessary for control of rodents
- Manufactured in black

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | 6041264407 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 487,623 in DIY & Tools ( See Top 100 in DIY & Tools ) 958 in Toilet Parts |
| Colour | Black |
| Customer Reviews | 4.0 4.0 out of 5 stars (109) |
| Date First Available | 19 Nov. 2013 |
| Item Package Quantity | 1 |
| Item Weight | 100 g |
| Item model number | amz-bath-fur-95 |
| Manufacturer | Cabinetsforbathrooms |
| Material | Polypropylene (PP) |
| Number of Pieces | 1 |
| Package Dimensions | 12.6 x 12.2 x 7 cm; 100 g |
| Part Number | amz-bath-fur-95 |
| Size | 4 inches |

## Product Details

- **Brand:** cabinetsforbathrooms
- **Exterior finish:** Black
- **Inlet connection size:** 4 Inches
- **Inlet connection type:** Threaded
- **Manufacturer:** Cabinetsforbathrooms
- **Material:** Polypropylene (PP)
- **Number of ports:** 1
- **Outlet connection size:** 4 Inches
- **Outlet connection type:** Compression

## Images

![McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black - Image 1](https://m.media-amazon.com/images/I/41Jz3pqNAbL.jpg)
![McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black - Image 2](https://m.media-amazon.com/images/I/41of6GeclSL.jpg)
![McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black - Image 3](https://m.media-amazon.com/images/I/61mAITjvfgL.jpg)

## Questions & Answers

**Q: Is this likely to stop rodents from entering if fitted vertically? In my situation there is little chance of back flow which would close the flap.**
A: Hi no it won't work vertically mc alppine make samebut for vertical where the trap will close otheralturnitive is to further along pipe where it is horizontal then install you will need one that fits inside pipe it works well cabinets for bathrooms have this

**Q: Is a similar fitting available for 160mm pipe?    I've got to stop waste coming back up the pipe but its further down the sewer line.**
A: Standard fitting

**Q: Can this be fitted in the manhole in the sewer if it is the same size, or is is only for toilets.**
A: Hi, we have fitted these into the inspection chamber/manhole. They fit inside the feeds into the chamber, and have successfully stopped the smell from a septic tank backing up and stinking out a bathroom. They would also stop rodents getting into the foul system. Hope that helps.

**Q: Can this be used to prevent back draft of wind**
A: From where and in what?

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for rodent problems!
*by M***S on 28 September 2016*

I struggled to source this at both B&Q and Screwfix (genuinely perplexed the staff in Screwfix) before finding it via Amazon and was good value. This worked perfectly for a rodent issue with a downstairs toilet leading directly into a sewer. The barrier valve worked perfectly and fit tightly within the sewer pipe, seems to have eradicated the problem and worked very well.

### ⭐⭐⭐⭐ Four Stars
*by J***I on 30 August 2015*

Seems to work, not RATs have entered my bathroom since fitting.

### ⭐⭐⭐⭐⭐ Stops fumes coming back
*by D***. on 21 July 2025*

Delighted, it did the job, easy to fit ,good price

## Frequently Bought Together

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-24*