Reflex Refix DE 500 500L Diaphragm Expansion Vessel – 10 Bar

The Reflex Refix DE 500 Diaphragm Expansion Vessel is engineered to maintain stable pressure in large-scale water supply, heating, and service water systems. With a 500-litre nominal volume, 10 bar maximum operating pressure, and 4 bar factory gas pre-charge, it protects system components from pressure fluctuations while improving operational efficiency.

Built with a replaceable butyl diaphragm and corrosion-protected steel vessel with a durable epoxy resin coating, the DE 500 delivers long-term reliability in demanding commercial and industrial applications. Designed in accordance with DIN EN 13831 and the Pressure Equipment Directive 2014/68/EC, it is suitable for service water systems, fire protection installations, underfloor heating, and heat source systems.

Key Features

• 500-litre nominal capacity
• Maximum operating pressure: 10 Bar
• Factory gas pre-charge: 4 Bar
• Replaceable butyl diaphragm
• Durable epoxy resin coated steel vessel
• Corrosion-protected water-contact components
• Designed to DIN EN 13831
• Approved under Pressure Equipment Directive 2014/68/EC
• Suitable for antifreeze concentrations between 25% and 50%
• Adjustable feet for easy installation

Applications

• Pressure booster systems
• Commercial water supply
• Industrial water systems
• Fire protection systems
• Service water installations
• Underfloor heating systems
• Heat source installations
• Hydro-pneumatic systems
• HVAC systems
• Large building water distribution

Technical Specifications

Why Choose the Reflex Refix DE 500?

The Reflex Refix DE 500 provides dependable pressure control for demanding water systems. Its replaceable butyl diaphragm, corrosion-resistant construction, and compliance with European standards ensure reliable long-term performance while protecting pumps and system components from excessive pressure fluctuations.