JAB DUC IE Internal Expansion Unvented

The JAB DUC IE Internal Expansion Unvented Cylinder is a compact, high-performance hot water storage system designed for modern domestic applications where space, efficiency, and reliability are key.

Constructed from high-grade duplex stainless steel, this cylinder offers excellent corrosion resistance and long-term durability. It's engineered for mains-pressure hot water delivery. Providing powerful flow rates for showers, taps, appliances without the need for a cold-water storage tank.

The Internal expansion design eliminates the requirement for an external expansion vessel, simplifying installation and saving valuable space. The indirect coil connection allows the unit to be heated by a boiler or renewable heat source, with an immersion heater connection for backup heating.

Applications

• Domestic properties requiring mains-pressure hot water
• Installations where Space is limited and an external expansion vessel is undesirable
• Upgrading from vented systems (loft tank) to modern, sealed unvented systems
• Properties needing energy-efficient, corrosion-resistant stainless steel cylinders
• Full compliance with UK Building Regulations G3 (installation by G3-qualified engineer required)

Key Features & Benefits

• Stainless steel construction for long life and corrosion resistance
• Internal expansion system - no separate vessel required
• Factory-Fitted insulation for reduced heat loss
• Compact Design ideal for tight spaces
• Suitable for use with system and regular boilers
• Fully compliant with G3 Building Regulations
• Space Saving Installation - Built-in expansion chamber simplifies setup
• Strong Mains-Pressure Performance- Consistent flow for showers and multiple outlets
• Reduced Installation Time - Fewer components and fittings required
• Energy Efficient - Excellent insulation minimises standing heat loss
• Low Maintenance - Minimal servicing required compared to external systems
• U.K. Manufactured