---
product_id: 59859435
title: "MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet"
brand: "multiflap"
price: "₱4323"
currency: PHP
in_stock: true
reviews_count: 8
category: "Multiflap"
url: https://www.desertcart.ph/products/59859435-multiflap-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve
store_origin: PH
region: Philippines
---

# Fits most toilet outlets 30+ years durability Rodent & backflow barrier MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet

**Brand:** multiflap
**Price:** ₱4323
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your toilet’s defense with the MultiFlap – where innovation meets peace of mind!

## Quick Answers

- **What is this?** MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet by multiflap
- **How much does it cost?** ₱4323 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/59859435-multiflap-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve)

## Best For

- multiflap enthusiasts

## Why This Product

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

## Key Features

- • **Marine-Grade Durability:** Constructed with stainless steel hinges and chemical-resistant materials for over 2 million cycles and 30+ years lifespan.
- • **Backflow Defense Mechanism:** Automatically closes under back pressure to prevent unpleasant and unsanitary backflow issues.
- • **Maintenance-Free Convenience:** No upkeep needed, yet easily removable for pipe cleaning or replacement without damage.
- • **Rodent-Proof & Pest-Deterring:** Black polypropylene blocks light and seals off rodents, keeping your bathroom hygienic and pest-free.
- • **Seamless Fit for Modern Toilets:** Designed to fit most toilets with rear waste outlets for effortless installation.

## Overview

The MultiFlap MF1 ARB1 is a robust anti cross-flow and rodent barrier valve designed for toilet WC outlets. Made from black polypropylene with marine-grade stainless steel components, it fits most rear outlet toilets, prevents pest ingress by blocking light and sealing the pipe, and stops backflow with an automatic flap mechanism. Tested for over two million cycles, it promises over 30 years of maintenance-free reliability, making it an essential upgrade for modern, hygienic bathrooms.

## Description

Free delivery and returns on all eligible orders. Shop MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet.

Review: Wonderful product - product as described, came on time.
Review: Brilliant - Works brilliantly after messing about with plumbers etc on a back flow situation and spending a fortune this simple gadget solved everything

## Features

- Fits most toilets where the waste outlet is behind the toilet Fits directly on to the toilet pan connector Black colouring reduces light from the toilet bowl which is known to attract pests Provides a closed door to rodents in the branch discharge pipe under no-flow conditions
- OPERATION The MultiFlap valve remains closed under static conditions and opens when there is flow through the valve, e.g. when the toilet is flushed. The closed valve provides an obstruction for vermin who may attempt to enter the toilet.
- BACKFLOW When there is back pressure downstream of the MultiFlap non return valve, the pressure closes the flap of the valve, reducing backflow.
- MATERIALS The MultiFlap valve/flap is moulded from black Polypropylene (PP). The rubber seal is manufactured from Thermo-Plastic Elastomer (TPE) and over moulded to the body. The flap is secured with a hinge and pin and spring that are made from non-rusting marine stainless steel. Made from materials that are resistant to chemicals likely to be used for cleaning.
- No maintenance of the valve is required, however the MultiFlap can be removed without causing damage, to allow for the removal of blockages or replacement of pipes
- The MultiFlap excelled in a performance test of over two million opening and closing cycles and showed no sign of deterioration. The MultiFlap will have a life span of more than of 30 years in the opinion of the Government body which tested the valve

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01819CQ5I |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 83,292 in DIY & Tools ( See Top 100 in DIY & Tools ) 153 in Drainage 698 in Pipes, Pipe Fittings & Accessories |
| Certification | CE |
| Customer Reviews | 4.4 4.4 out of 5 stars (37) |
| Date First Available | 15 Nov. 2015 |
| Item Weight | 120 g |
| Item model number | MF1 ARB1 |
| Manufacturer | Multiflap |
| Material | Polypropylene (PP) |
| Package Dimensions | 15.3 x 13.3 x 11.4 cm; 120 g |
| Part Number | MF1 |
| Size | 4 inches |

## Product Details

- **Brand:** Multiflap
- **Exterior finish:** Polypropylene
- **Inlet connection size:** 4 Inches
- **Inlet connection type:** Compression
- **Manufacturer:** Multiflap
- **Material:** Polypropylene (PP)
- **Number of ports:** 2
- **Outlet connection size:** 4 Inches
- **Outlet connection type:** Flange
- **Specification met:** CE

## Images

![MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Image 1](https://m.media-amazon.com/images/I/31PZQwuNSpL.jpg)
![MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Image 2](https://m.media-amazon.com/images/I/41VcBvEPpmL.jpg)
![MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet - Image 3](https://m.media-amazon.com/images/I/51jJAHR3w3L.jpg)

## Questions & Answers

**Q: What diameter pipe is this for?**
A: 4" pipe

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wonderful product
*by M***R on 11 November 2024*

product as described, came on time.

### ⭐⭐⭐⭐⭐ Brilliant
*by M***R on 23 September 2023*

Works brilliantly after messing about with plumbers etc on a back flow situation and spending a fortune this simple gadget solved everything

### ⭐⭐⭐ Very expensive for what it is
*by M***R on 27 February 2025*

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.

## Frequently Bought Together

- MultiFlap MF1 ARB1 Anti Cross-Flow and Rodent Barrier Valve for Toilet WC Outlet
- Flexible Toilet Pan Connector Universal WC Flexi Slinky Waste Soil Pipe 260mm-500mm

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**Shop now:** [https://www.desertcart.ph/products/59859435-multiflap-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve](https://www.desertcart.ph/products/59859435-multiflap-mf1-arb1-anti-cross-flow-and-rodent-barrier-valve)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-22*