---
product_id: 64335025
title: "McAlpine CONVALVE in-Line Vertical Non-Return Valve, White"
brand: "mcalpine"
price: "RM199"
currency: MYR
in_stock: true
url: https://www.desertcart.com.my/products/64335025-mcalpine-convalve-in-line-vertical-non-return-valve-white
store_origin: MY
region: Malaysia
---

# BS 6798:2009 Compliance 19/23mm Inlet/Outlet Non-Return Functionality McAlpine CONVALVE in-Line Vertical Non-Return Valve, White

**Brand:** mcalpine
**Price:** RM199
**Availability:** ✅ In Stock

## Summary

> 💧 Keep Your Boiler Flowing Smoothly!

## Quick Answers

- **What is this?** McAlpine CONVALVE in-Line Vertical Non-Return Valve, White by mcalpine
- **How much does it cost?** RM199 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/64335025-mcalpine-convalve-in-line-vertical-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

- • **📏 Versatile Sizing:** Compatible with 19/23mm pipework for flexible installation options.
- • **🔧 Easy Installation:** Designed for hassle-free setup, making it a must-have for any plumbing project.
- • **🌟 Lightweight Design:** Weighing only 60g, it’s easy to handle without compromising on durability.
- • **🚫 Waste Water Prevention:** Safeguards your condensing boiler from unwanted waste water.
- • **🏗️ Regulatory Compliance:** Meets BS 6798:2009 standards, ensuring peace of mind and safety.

## Overview

The McAlpine CONVALVE is a vertical non-return valve designed to prevent waste water from entering condensing boilers, ensuring compliance with BS 6798:2009 and Building Regulations Approved Document H. With a compact size of 12 x 5 x 15 cm and a lightweight design of just 60g, it offers easy installation and versatile compatibility with 19/23mm pipework.

## Description

McAlpine CONVALVE in-Line Vertical Non-Return Valve, White

## Features

- Vertical Non-Return valve
- 19/23mm Inlet and Outlet
- Prevents waste water from sanitary pipework entering a condensing boiler
- Receives the discharge from a condensing boiler
- Conforms to BS 6798:2009 and Building Regulations Approved Document H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | McAlpine |
| Part Number | CONVALVE |
| Product Dimensions | 12 x 5 x 15 cm; 60 g |
| Item model number | CONVALVE |
| Colour | White |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Measurement System | Metric |
| Included Components | trap; fittings; |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 60 g |

## Images

![McAlpine CONVALVE in-Line Vertical Non-Return Valve, White - Image 1](https://m.media-amazon.com/images/I/51nrV9nkqiL.jpg)
![McAlpine CONVALVE in-Line Vertical Non-Return Valve, White - Image 2](https://m.media-amazon.com/images/I/61k2Oq2NwyL.jpg)

## Questions & Answers

**Q: When should I use an anti-syphon or resealing trap?**
A: Generally, the waste pipe or discharge pipe from an appliance is beyond the limitations of an unvented waste pipe. Usually more critical on the basin and bidet Wastes.

**Q: What is the difference between an anti-syphon trap and a re-sealing trap?**
A: A re-sealing is designed to allow air to pass through the water seal under negative pressure but will retain sufficient water. An anti siphon trap has a small mechanical valve which opens under negative pressure.

**Q: Why does water not run away in my shower?**
A: If it is not due to the obvious reason of a blockage caused by a buildup of debris, the problem could be due to back pressure within the discharge pipe.

**Q: What is the maximum thickness of bath that your bath fillers can be installed on?**
A: The maximum thickness of the bath is 20mm and unfortunately, we do not make an extension ferrule to extend that length.

## Frequently Bought Together

- McAlpine CONVALVE in-Line Vertical Non-Return Valve
- Monument 15mm Olive Cutter
- McAlpine TUN5-CL Tunvalve Straight Through (Clear)

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**Shop now:** [https://www.desertcart.com.my/products/64335025-mcalpine-convalve-in-line-vertical-non-return-valve-white](https://www.desertcart.com.my/products/64335025-mcalpine-convalve-in-line-vertical-non-return-valve-white)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-22*