Mikrofill 3 Pressurisation Unit – EFD120021

The Mikrofill 3 Pressurisation Unit – EFD120021 provides intelligent pressure management for sealed heating and chilled water systems. Unlike conventional pump-type units, the Mikrofill 3 Pressurisation Unit – EFD120021 connects directly to the building’s incoming mains or boosted water supply. As a result, it fills and maintains system pressure without using an internal pump, helping to reduce energy consumption while simplifying installation.

Furthermore, the unit incorporates Fluid Category 4 backflow protection, eliminating the need for a separate RPZ valve. It also features comprehensive electronic pressure management, allowing the system to maintain the correct operating pressure automatically. Consequently, installers and building operators benefit from reliable performance and reduced maintenance requirements.

Built with a compact wall-mounted design, the unit measures just 270 mm high by 250 mm wide, making it suitable for installation in plant rooms where space is limited. In addition, the large colour display provides clear operating information, while the integrated fill volume indicator assists with water treatment calculations and routine servicing.

The Mikrofill 3 Pressurisation Unit – EFD120021 consumes as little as 10 watts in standby and approximately 30 watts during operation, making it significantly more energy efficient than many traditional pump-type pressurisation units. Therefore, it offers an economical solution for maintaining sealed heating and chilled water systems over the long term.

Whether you are installing a new system or replacing an existing pressurisation unit, the Mikrofill 3 Pressurisation Unit – EFD120021 delivers dependable performance, intelligent control, and straightforward operation.

Need accessories or compatible vessels? Browse our Mikrofill Expansion Vessels collection.

For detailed specifications and installation guidance, visit the Official Mikrofill Website.

Key Features

• Direct-type (pumpless) pressurisation unit
• Product code: EFD120021
• Connects directly to mains or boosted water supply
• Integral Fluid Category 4 backflow protection
• No separate RPZ valve required
• Comprehensive electronic pressure management
• Large colour display
• Fill volume indicator
• Compact wall-mounted design
• Low energy consumption
• Suitable for sealed heating and chilled water systems

Benefits

• Maintains automatic system pressure
• Reduces energy consumption
• Eliminates the need for an RPZ valve
• Saves plant room space
• Simplifies installation
• Supports reliable long-term operation