Ibaiondo Fixed Membrane Expansion Vessel 25 Liters 3/4"

The Ibaiondo 25-liter fixed membrane expansion vessel is designed for use in closed heating and cooling systems, where it is essential to absorb fluid volume variations caused by temperature changes. Its robust steel construction and non-replaceable membrane ensure safe and stable operation over time.

This model complies with EN 13831 for non-potable applications and is manufactured in accordance with Pressure Equipment Directive 2014/68/EU, making it a reliable solution for both domestic and commercial installations.

Main Applications

• Closed heating systems
• Air conditioning and cooling installations
• Hydraulic networks with thermal expansion control
• Installations not intended for potable water

Construction Features

• Tank made of high-strength steel
• Fixed, non-replaceable membrane according to EN 13831
• Water connection in galvanized steel
• Built-in inflation valve
• Pre-charge gas: air
• Exterior finished with red paint

Technical Data

• Nominal volume: 25 liters
• Maximum working pressure: 5 bar
• Test pressure: 7.5 bar
• Factory pre-charge pressure: 1.5 bar
• Maximum operating temperature: 100 °C
• Minimum operating temperature: -10 °C
• Non-replaceable membrane

Connections

• Water connection: male thread R 3/4”
• Connection type: G.M

Dimensions and Weight

• External diameter: 320 mm
• Height: 430 mm
• Approximate weight: 4.5 kg

Standards and Compliance

• Manufactured in accordance with Directive 2014/68/EU
• Membrane compliant with EN 13831 (non-potable use)

The Ibaiondo 25-liter expansion vessel is a robust and efficient solution to protect heating and cooling installations against overpressure, ensuring stable, safe, and long-lasting system operation.