---
product_id: 49212929
title: "Set of 2L Expansion Vessel and Non-Return Valve"
brand: "ariston"
price: "533.37 DT"
currency: TND
in_stock: true
reviews_count: 9
category: "Ariston"
url: https://www.desertcart.tn/products/49212929-set-of-2l-expansion-vessel-and-non-return-valve
store_origin: TN
region: Tunisia
---

# Non-return valve included 2L capacity precision Pressure protection Set of 2L Expansion Vessel and Non-Return Valve

**Brand:** ariston
**Price:** 533.37 DT
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your heating system’s safety with precision and style!

## Quick Answers

- **What is this?** Set of 2L Expansion Vessel and Non-Return Valve by ariston
- **How much does it cost?** 533.37 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/49212929-set-of-2l-expansion-vessel-and-non-return-valve)

## Best For

- ariston enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Compatibility:** Designed for Ariston Andris range water heaters for perfect fit and performance
- • **UKCA Certified Quality:** Fully compliant with UK standards for peace of mind installation
- • **Compact 2L Expansion Vessel:** Optimized size for efficient pressure control in closed water heating systems
- • **Integrated Non-Return Valve:** Prevents backflow, ensuring system safety and longevity
- • **Lightweight Alloy Steel Build:** Durable yet easy to install, weighing just over 1kg

## Overview

This Set of 2L Expansion Vessel and Non-Return Valve by Ariston offers a compact, durable solution to protect closed water heating systems from excessive pressure. Fully UKCA certified and designed for seamless integration with Ariston Andris water heaters, it ensures reliable performance and system longevity with easy installation.

## Description

Shop Set of 2L Expansion Vessel and Non-Return Valve. Free delivery on eligible orders of £20 or more.

Review: Good quality - Came quickly and was soon put to use for the purpose it was designed for
Review: Fitted perfectly - Fitted perfectly when installing a water heater, good price too.

## Features

- Set of 2L expansion vessel and non-return valve
- To protect closed water heating systems from excessive pressure
- For optional use with Ariston Andris range water heaters
- Model number: 406801
- Fully UKCA certified to be installed in the UK Market.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003ITQXFG |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 103,853 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,097 in Central Heating System Accessories |
| Colour | White |
| Customer Reviews | 4.0 4.0 out of 5 stars (56) |
| Date First Available | 23 April 2010 |
| Included Components | 2L expansion vessel, non-return valve |
| Item Package Quantity | 1 |
| Item Weight | 1.02 kg |
| Item model number | 406801 |
| Manufacturer | Ariston |
| Material | Alloy Steel |
| Part Number | 406801 |
| Product Dimensions | 12.5 x 12.5 x 23.7 cm; 1.02 kg |
| Size | 12.5 cm x 12.5 cm x 23.7 cm |

## Product Details

- **Brand:** Ariston
- **Exterior finish:** Stainless Steel
- **Inlet connection type:** Female Iron Pipe
- **Item dimensions L x W x H:** 12.5 x 12.5 x 23.7 centimetres
- **Manufacturer:** Ariston
- **Material:** Alloy Steel
- **Number of ports:** 2
- **Outlet connection type:** BSPT

## Images

![Set of 2L Expansion Vessel and Non-Return Valve - Image 1](https://m.media-amazon.com/images/I/41pu2caeOwL.jpg)

## Questions & Answers

**Q: Have bought ariston 3kw 15ltr under sink heater. is this kit all that is needed to reduce water pressure if needed? any advice? thanks**
A: Hi ThereYou'd also need the pressure reducing valve and tundish which you can find in kit form here:https://www.amazon.co.uk/Ariston-Europrisma-Expansion-Vessel-LITRE/dp/B003ITQXFG/ref=sr_1_5?ie=UTF8&qid=1472629858&sr=8-5&keywords=ariston+kit

**Q: Is this product suppose to be blue?**
A: Good Morning, 
Thanks for your question. The original Ariston Kit A product is white. If you received a product in a different colour or packaging without an original Ariston label, you unfortunately didn’t receive the branded Ariston product advertised on this listing.
Regards.

**Q: What is the max pressure and working pressure of this one please,  thanks?**
A: Good Morning,

Thank you for your question. The maximum test pressure for the Kit A is 15 bar, maximum working pressure is 10 bar and the nominal working pressure is 3.5 bar.

Kind Regards.

**Q: Does it come with a wall mount bracket?**
A: Hello,

Thanks for your question. Being just a 2 liter expansion vessel doesn’t require a support bracket, it’s enough the pipework to support this unit. 

At your disposal for further clarification.

Thank you. 
Regards.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good quality
*by S***G on 2 March 2023*

Came quickly and was soon put to use for the purpose it was designed for

### ⭐⭐⭐⭐⭐ Fitted perfectly
*by P***E on 15 February 2022*

Fitted perfectly when installing a water heater, good price too.

### ⭐⭐⭐⭐ Good
*by M***S on 11 February 2013*

It was bought for a studio flat a year ago and has not given any problems as yet. It is very compact and supplies hot water to a kitchen sink and shower room basin

## Frequently Bought Together

- Ariston 406801 KIT A 2L Expansion Vessel & Non-Return Valve, White
- Ariston 406802 KIT B 3.5 BAR Pressure REDUCING Valve, Bronze
- Ariston ANDRIS LUX ECO 15 L Undersink Electric Water Heater 2.5kW with A Titanium Enamelled Tank, A Class Erp Rating, Copper Heating Element, Manufactured To Be Installed In UK - 3100722, White

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-01-22*