Viessmann Vitopend 100 Combi Boiler Expansion Vessel 6 L 3/8" (Round)

Viessmann Vitopend 100 combi boiler expansion vessel: 6 liters, 3/8" male threaded union, round flat body (Ø335 × 85 mm). It is the vessel type used in Vitopend 100-W (WH1D, A1JA, A1JB, A1HB) and Vitopend 050-W models; it replaces original part numbers 7831308 / 7856838. It absorbs the water that expands during heating, preventing pressure fluctuations and water discharge from the safety relief valve. Before ordering, check that the union size of the removed vessel is 3/8"; we have a separate product for the Vitodens 100 series, which uses an 8-liter rectangular vessel.

Manufactured in Turkey by Önaysan, the Viessmann Combi Boiler Expansion Vessel is designed to balance the pressure changes that may occur due to thermal expansion. This helps heating and cooling systems operate longer and more effectively.

Product Features

• Model: Viessmann Combi Boiler Expansion Vessel
• Capacity: 6 L
• Connection Size: 3/8"
• Product Diameter: 335mm
• Depth: 85mm
• Max. Operating Pressure: 3 Bar
• Operating Temperature: -10 / 90 °C
• Country of Manufacture: Turkey
• Brand: Önaysan

Product Description

With a diameter of 335mm and a depth of 85mm, this compact vessel can easily be installed even in tight spaces. With a wide operating temperature range from -10 to 90°C, this vessel delivers stable and reliable performance with a maximum operating pressure of 3 Bar.

Applications

The 3/8" 6L Viessmann Combi Boiler Expansion Vessel is ideal especially for Viessmann combi boiler systems. However, it can also be used in other heating systems with a similar connection size and capacity.

Note

It is recommended that you get specialist technical service support for the installation, maintenance and inspection of the expansion vessel. Incorrect installation or maintenance may adversely affect the efficiency and safety of the appliance.