Flow-through membrane pressure expansion vessel, designed for heating potable water, water supply, and pressure boosting. This product has an internal and external surface finish according to KTW-A and is exclusively suitable for cold water systems.

The vessel is manufactured according to the DIN EN 13831 standard and tested according to DIN 4807 T5. The maximum operating pressure is 10 bar and the product complies with the Pressure Equipment Directive 2014/68/EU.

Technical Specifications

• Type: DD 12
• Nominal volume: 12 l
• Maximum usable volume: 9 l
• Maximum operating temperature: 70 °C
• Maximum operating pressure: 10 bar
• Pre-charge pressure – factory setting: 4 bar

Dimensions and Weight

• Connection: WBI G 3/4"
• Diameter: 280 mm
• Height: 318 mm
• Folded dimension: approx. 424 mm
• Weight: 2.20 kg

Key Features

• Corrosion-resistant parts in contact with water
• Non-stretch full membrane according to DIN EN 13831
• Surface finish according to KTW-A
• Compatible with Flowjet flow fitting

This product is approved and certified according to SVGW.