---
product_id: 49212828
title: "Ariston Water Heater Expansion Vessel Kit A"
brand: "ariston"
price: "€ 129.01"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/49212828-ariston-water-heater-expansion-vessel-kit
store_origin: SK
region: Slovakia
---

# 2L capacity 10 bar max pressure 1.5kg lightweight Ariston Water Heater Expansion Vessel Kit A

**Brand:** ariston
**Price:** € 129.01
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your water heater safe and sound with Ariston’s sleek pressure pro!

## Quick Answers

- **What is this?** Ariston Water Heater Expansion Vessel Kit A by ariston
- **How much does it cost?** € 129.01 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/49212828-ariston-water-heater-expansion-vessel-kit)

## 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

- • **Lightweight Design:** Just 1.5kg for easy installation and maintenance
- • **Compact 2L Capacity:** Optimized size for efficient pressure management without bulk
- • **Integrated Check Valve:** Built-in safety feature to prevent backflow and protect your system
- • **High Pressure Tolerance:** Handles up to 10 bar ensuring reliable performance under stress
- • **Trusted Ariston Quality:** Engineered by a leading brand for durability and peace of mind

## Overview

The Ariston Water Heater Expansion Vessel Kit A is a compact, 2-litre expansion tank designed to manage pressure fluctuations in water heating systems. Weighing just 1.5kg and rated for a maximum pressure of 10 bar, it features an integrated check valve for enhanced safety. This reliable accessory ensures optimal performance and longevity of your water heater, backed by Ariston’s trusted engineering.

## Description

Ariston Water Heater Expansion Vessel Kit A

## Features

- Ariston Water Heater Expansion Vessel Kit A
- Capacity 2 litres
- Weight 1.5kg
- Max pressure 10 bar

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Ariston |
| Part Number | Kit A |
| Package Dimensions | 24.8 x 18.9 x 16 cm; 1.02 kg |
| Manufacturer reference | Kit A |
| Colour | White |
| Item Package Quantity | 1 |
| Plug profile | internal |
| Special Features | Check Valve Safety Feature |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 1.02 kg |

## Product Details

- **Brand:** Ariston
- **Capacity:** 2 litres
- **Special feature:** Check Valve Safety Feature
- **Colour:** White
- **Material:** Brass, Stainless Steel

## Images

![Ariston Water Heater Expansion Vessel Kit A - Image 1](https://m.media-amazon.com/images/I/61nQlF8a8jL.jpg)

## Questions & Answers

**Q: Is this expansion vessel is pre-charged on delivery and what is the pre-charged pressure?**
A: The pressure vessel is pre-charged at 3.5 bar.

**Q: Will this stop continual dripping from pressure relief valve on my 10ltr unvented water heater**
A: Yes. It is necessary to allow for expansion. Hot water expands by up to 10% and the vessel allows for this. If you don’t fit then the pressure forces it’s way out via the tap (dripping) or out of the pressure relief valve.

**Q: what fitting do i need to connect this to my 15mm pipe work?**
A: I suggest you take the vessel to a plumbers merchant and ask them to give you an adapter from the thread on the vessel to 15mm pipe.

**Q: Is the membrane made from epdm rubber?**
A: It is synthetic rubber but I cant say if it is EPDM, Nitrile , or something else.  I cannot think of any water component that would cause a problem with those.

## Frequently Bought Together

- Ariston Water Heater Expansion Vessel Kit A
- Ariston 406802 KIT B 3.5 BAR Pressure REDUCING Valve, Bronze
- Ariston 406807 KIT C Discharge TUNDISH (15MM-22MM), Black

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-24*