- New

Available
The expansion vessel hose – DIFF for Saunier Duval, reference 0020061368, is designed to provide the hydraulic connection between the expansion vessel and the boiler circuit. Its flexible design makes maintenance and replacement operations easier, especially in confined boiler spaces.
Why replace an expansion vessel hose?
A worn, blocked or damaged hose can affect the proper operation of the expansion vessel, causing abnormal pressure variations and heating system malfunctions.
What is the purpose of an expansion vessel hose in a boiler?
It provides the hydraulic connection between the expansion vessel and the heating circuit, allowing the vessel to absorb water volume and pressure variations during heating cycles.
Technical information
Safety information:
Before any intervention, disconnect the boiler power supply and isolate the hydraulic circuits. Installation by a qualified professional is recommended.
Additional information:
This part is an original spare part from parts manufacturer, it is labelled and packaged under the DIFF distribution brand
Features of product: HOSE FOR EXPANSION VESSEL- DIFF POUR SAUNIER DUVAL - 0020061368

The cost of manufacturer parts can sometimes hinder regular maintenance of your gas boiler. The DIFF brand offers a relevant solution for both professionals and knowledgeable individuals, optimizing distribution and packaging costs.
The most important aspect of DIFF parts is the guarantee of compliance. We provide components that meet the same technical specifications as the parts installed by Saunier Duval. Our commitment is firm:
DIFF parts are designed according to our own specifications, ensuring compatibility and quality equivalent to manufacturer's original parts.
You can thus replace your three-way valves, pressure switches, or control boards with confidence, while managing your budget.
Legally, choosing a quality equivalent spare part cannot result in the loss of your device's warranty. This is your right, and it is the policy of the DIFF brand:
The use of DIFF or DIFF Isotherm parts does not affect the manufacturer’s warranty, as long as they are correctly installed and comply with safety requirements.
To order the correct spare part, it is essential to rely on the manufacturer's reference for the defective Saunier Duval part. Use this reference to find the corresponding DIFF equivalent in our catalog. Common parts categories include:
Heat Exchangers: Critical parts for ECS (Domestic Hot Water) on Thema models.
Fans: For flue gas extraction on condensing boilers.
Control Boards: For the electronic brain of your installation.
Choose DIFF parts for your Saunier Duval spare parts: guaranteed performance at an optimized price.
| Carrier | Information | Price | Delivery |
|---|