---
product_id: 48962819
title: "McAlpine T28M-NRV Multifit in-Line Non-Return Valve - White"
brand: "mcalpine"
price: "$56.79"
currency: USD
in_stock: true
reviews_count: 13
category: "Mcalpine"
url: https://www.desertcart.us/products/48962819-mcalpine-t28m-nrv-multifit-in-line-non-return-valve-white
store_origin: US
region: United States of America
---

# prevents backflow effectively 1½" universal connection top access for easy cleaning McAlpine T28M-NRV Multifit in-Line Non-Return Valve - White

**Brand:** mcalpine
**Price:** $56.79
**Availability:** ✅ In Stock

## Summary

> 🚿 Keep your flow flawless and your space fresh!

## Quick Answers

- **What is this?** McAlpine T28M-NRV Multifit in-Line Non-Return Valve - White by mcalpine
- **How much does it cost?** $56.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48962819-mcalpine-t28m-nrv-multifit-in-line-non-return-valve-white)

## Best For

- mcalpine enthusiasts

## Why This Product

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

## Key Features

- • **Clean in a Snap:** Top access design allows quick, tool-free maintenance to keep your system running smoothly.
- • **Backflow Blocker:** Engineered to prevent unwanted water backflow, protecting your home from leaks and odors.
- • **Trusted Reliability:** Highly rated with 4.4 stars and proven performance in real-world installations.
- • **Compact & Lightweight:** At just 160g and 12.2cm size, it fits discreetly without bulk or fuss.
- • **Universal Fit, Zero Hassle:** 1½" universal connections ensure seamless integration with your existing plumbing setup.

## Overview

The McAlpine T28M-NRV Multifit In-Line Non-Return Valve is a compact, easy-to-install plumbing valve designed to prevent water backflow. Featuring 1½" universal connections and a top-access cleaning port, it offers hassle-free maintenance and reliable performance, making it an essential upgrade for any modern bathroom or kitchen plumbing system.

## Description

McAlpine T28M-NRV 1½" Multifit In-Line Non-Return Valve with top access for cleaning. Prevents back flow of water. Must be installed in the horizontal position. Should only be used when there is no alternative. 1½" Universal Connections. Top Access for easy cleaning. Required to be cleaned regularly. Manufacturers Code: T28M-NRV

Review: works well - fitting is simple
Review: Excellent piece of kit - Excellent piece of kit. My idiot builder did not put a water trap into the downstairs bathroom after our rebuild. We had an awful sewer smell going straight out of the shower. I broke out the pipe boxing and as there was no room to fit a u bend, I installed ithis kit in about twenty minutes. Worked brilliantly and no more sewer smell since. One word of caution, when cleaning drain pipe, the flap is easy to lose down the pipe if you miss seat it.

## Features

- Prevents back flow of water
- 1½" Universal Connections
- Top access for easy cleaning

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003KNCNJA |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 138,181 in DIY & Tools ( See Top 100 in DIY & Tools ) 359 in Toilet Parts |
| Colour | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (382) |
| Date First Available | 4 May 2010 |
| Included Components | 1 x trap; fittings; |
| Item Package Quantity | 1 |
| Item Weight | 160 g |
| Item model number | T28M-NRV |
| Manufacturer | McAlpine |
| Material | Plastic |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | T28M-NRV |
| Product Dimensions | 6.4 x 12.2 x 12.2 cm; 160 g |
| Size | 40 mm |

## Product Details

- **Brand:** Mcalpine
- **Exterior finish:** White
- **Global Trade Identification Number:** 05036484005151
- **Inlet connection size:** 40 Millimeters
- **Inlet connection type:** Cutting Ring
- **Item dimensions L x W x H:** 6.4 x 12.2 x 12.2 centimetres
- **Material:** Plastic
- **Number of ports:** 2
- **Outlet connection size:** 4E+1 Millimeters
- **Outlet connection type:** NPT

## Images

![McAlpine T28M-NRV Multifit in-Line Non-Return Valve - White - Image 1](https://m.media-amazon.com/images/I/41cMy-NozwL.jpg)

## Questions & Answers

**Q: Can I use this under a kitchen sink, attaching a washing machine drainage spigot to the T junction?**
A: I'm not sure I understand what you are trying to do, connect a washing-machine to an existing outlet? If so, then no, this is not the piece you want. If you look at the photo of the piece, the upright 'leg' of the T as it's shown here, holds a swinging flap, which sits across and regulates the flow in the through-pipe (allows liquid freely through in one direction, 'non-return' or blocked if the flow is the opposite direction)

**Q: To ensure I have the correct fitting, my waste pipe is 40mm diameter. Does this non-return valve fit as the dimensions shown suggest it won't?**
A: I have fitted mine to my 40mm waste pipe.  Mine is push fit but it will also fit 40mm solvent pipe.

**Q: Could this be used on the outlet flow of a macerator?**
A: Yes. I have mine connected to a saniflow macerator although for kitchen use only, I have no experience of it being used in a WC system. I use it in a kitchen sink since the one valve system used is not very good when disconnecting the saniflow pump for repair/maintenance.

**Q: Is it possible to buy the rubber seal separately as it wears after a period requiring the whole fitting to be bought just to get a new . Thanksseal**
A: No you cant buy,  but you can make one get a piece of gasket rubber and cut ring out.  Dont pour harsh drain cleaners down pipe,  that will perish seal,  ok

## Customer Reviews

### ⭐⭐⭐⭐⭐ works well
*by A***R on 30 August 2024*

fitting is simple

### ⭐⭐⭐⭐⭐ Excellent piece of kit
*by R***D on 29 August 2015*

Excellent piece of kit. My idiot builder did not put a water trap into the downstairs bathroom after our rebuild. We had an awful sewer smell going straight out of the shower. I broke out the pipe boxing and as there was no room to fit a u bend, I installed ithis kit in about twenty minutes. Worked brilliantly and no more sewer smell since. One word of caution, when cleaning drain pipe, the flap is easy to lose down the pipe if you miss seat it.

### ⭐⭐⭐⭐ Considerable flow reduction (for a water feature)
*by M***A on 25 June 2021*

When your water blade waterfall is switched off, the last thing you want to hear is the back flow loud gurgle of the water returning to its sump, so instead you fit a 40mm non-return valve in the sump to prevent this. That is what it was bought for, and that is what it is doing daily, and superbly too. The only minor criticism, and only because of my use of it in an illegitimate way, is the noticeable difference in flow pressure caused by the circumference wall of the NRV, but well within tolerance, but to the designers eye, very noticeable. All the same, it does what it says on the tin and at a highly competitive price too - what’s not to like?

## Frequently Bought Together

- McAlpine T28M-NRV Multifit in-Line Non-Return Valve, White
- Merriway BH02915 Waste Compression 90 Degree Bend, 40mm, White
- Merriway BH02916 Waste Compression Tee Connector, 40mm , White

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-20*