Reflex - HW 25 Home Booster Expansion Vessel - 25Ltr

The Refix HW 25 expansion vessel is designed for domestic water systems that are not used in DIN 1988 compliant drinking water installations. Built with a flange plate for simple pump assembly, this vessel provides a practical solution for compact domestic water pressure systems where reliable expansion control and straightforward integration are required.

Designed and manufactured in accordance with DIN EN 13831 and approved under Pressure Equipment Directive 2014/68/EC, the Refix HW 25 is constructed for reliable long-term service. The tank surface and all parts in contact with water are protected against corrosion, while the durable epoxy resin coating helps support lasting performance in demanding operating conditions.

The vessel features a butyl bladder in line with DIN EN 13831, with replaceable bladder construction from 50 Litres upwards. Its compact footprint and integrated mounting-friendly design make it well suited to domestic booster and water system applications where space efficiency and reliable operation are important.

Key Product Features

• Refix HW 25 expansion vessel for domestic water systems
• Suitable for systems not used in DIN 1988 compliant drinking water installations
• Flange plate for simple pump assembly
• Designed and manufactured in accordance with DIN EN 13831
• Approved in line with Pressure Equipment Directive 2014/68/EC
• Tank surface and parts in contact with water are protected against corrosion
• Durable epoxy resin coating
• Butyl bladder according to DIN EN 13831
• Replaceable bladder construction from 50 Ltrs upwards
• Type: HW 25
• Colour: Blue
• Diaphragm material: Butyl
• Nominal volume: 25 Ltrs
• Maximum useful volume: 18.2 Ltrs
• Minimum operating temperature: -10 °C
• Maximum operating temperature: 70 °C
• Maximum operating pressure: 10 Bar
• Factory pre-charge pressure: 1.5 Bar
• Connection: G 3/4"
• Diameter: 280 mm
• Height: 301 mm
• Width: 518 mm
• Wide bases: 227 mm
• Depth: 270 mm
• Bracket depth: 214 mm
• Tilt dimension approx.: 411 mm
• Weight: 5.05 kg

Reflex (est. 1898) is a German manufacturer of expansion vessels, pressurisation units and system components for heating and cooling networks. Their ranges support HVAC and potable water installations, commonly used in residential and commercial buildings for pressure maintenance, deaeration and system protection.