Compact, totally enclosed combined digital pressurisation units. System fluid is sampled from the system, isolated and subjected to a full vacuum. All dissolved air within the sample is liberated in accordance with Henrys Law and vented to atmosphere. The deaerated fluid is then reintroduced to the system. This process is automatically repeated and controlled with a digital processor. A turbo mode is available for initial system setup to allow for rapid deaeration of new installations. The real-time display shows the status of the mechanical components.

The Flexfiller Plus and Midifill Plus are compact, totally enclosed combined digital pressurisation units wit h vacuum degasser for use on sealed systems in order to provide a minimum system pressure requirement and effective dissolved gas removal.

System Volume (Guide): < 300,000 litres (Midifill Plus 150D: < 50,000 litres).

Application:

• Commercial and Industrial

Product Features:

• For system volumes up to 300,000 litres (Midifill Plus 150D: < 50,000 litres).
• Available with single pump (Midifill Plus) or double pump (for duty/standby configuration).
• Fluid Protection Category 5 (AB Weir Overflow.
• Onscreen Service Reminder - 12 Months.
• Individual controllers for pressurisation and degassing function.
• Vacuum degassing, turbo and normal interval modes.
• Electric pump, 230V 50Hz 1ph (2160D: 415V 50Hz 3ph).
• Colour: Midifill Plus: White (RAL 9003), Flexfiller Plus: Black (RAL 9005).
• MODBUS RTU Communication Protocol.
• System fill mode.
• Password protected.
• Pressure setting in 0.1 bar. increments.
• Sequential programming menu.
• Pump pulse option.
• Flood Protection (Pump Runtime Limiter, Excessive Start Alarm).
• Event logging: Alarm activations, Pump Run counter (activations per pump), Cumulative run timer (hours per pump), Electrical interuption.
• Volt free contacts: Common Alarm (N/C), High Pressure Alarm (N/O), Low Pressure Alarm (N/O), Sensor Health (N/O), Pump 1 Health (N/O), Pump 2 Health (N/O).

• Optional Additional Volt Free Contacts: Low Pressure Warning (N/O), High Pressure Warning (N/O), Low Water In Break Tank (N/O), Low Additive In Holding Tank (N/O), Pump 1 Run For Topup (N/O), Pump 2 Run For Topup (N/O).

Set-and-go pressure control for sealed systems: the Digifiller is a wall-mounted digital pressurisation unit with an electronic pressure transducer and microprocessor control for precise, reliable top-up.

Delivering up to 12 L/min via a 4 Ltrs internal break tank, it ships pre-commissioned with factory preset delivery pressures of 0.5, 1.0, 1.5 or 2.0 Bar (fully adjustable on site in 0.1 Bar steps). A self-bleed pump, system fill mode and password-protected menus make setup fast and foolproof.

• Category 5 protection (Type AB weir overflow)
• MODBUS RTU integration for BMS connectivity
• Plug & play presets; easily reconfigured on site
• White powder-coat finish (RAL 9003)

Ideal for commercial, industrial and large domestic plant rooms (guide volume ≤ 50,000 Ltrs).

Developed for sealed heating and chilled water plant requiring automatic top-up, this Pro PDm 1.0 Wall Mounted Digital Pressurization Unit delivers reliable performance with a tidy, installer'friendly form.

Compact and totally enclosed digital pressurisation units with electronic pressure transducer and user-friendly microprocessor for use on sealed system in order to provide a minimum system pressure requirement.

The Pro PDm is a wall-mounted, flow rate (up to 12 l/min) top-up pressurisation unit with 4 litre internal break tank.

Ideal for Industrial, commercial or large domestic applications.

Available preset to 1.0 bar, 1.5 bar, 2.0 Bar.

or 2.5 Bar.

Engineered for day'to'day plantroom demands, it helps maintain stable operation, protects equipment, and simplifies maintenance.

• Digital control and monitoring
• Automatic cold-fill top-up
• Compact wall-mounted format

Pair with suitable isolation, safety devices and treatment to meet site requirements and best practice.

The Mikrofill MINI SPU130 - 3 bar. is a compact, digital pressurisation unit for domestic and light commercial sealed systems — covering LPHW, CHW, refrigeration and industrial cooling.

Wall-mounted for easy install and commissioning, it delivers a 3.0 Bar cold fill and integrates a 2 Ltrs tank, making it ideal for systems up to 6,000 Ltrs.

• Digital control with LED display
• Automated top-up for consistent pressure
• High-flow, KIWA-approved fill valve
• Category 5 backflow protection (Type AB air gap)

Outlet can be configured left or right using the supplied flexible hose, keeping installs neat in tight plant spaces.

Technical Specifications Mains Supply Pressure : 0. 5 – 6. 0 bar. System PN Rating : PN6. Maximum Top-Up Pressure : 3. 0 bar. Humidity Range : 60–70%, non-condensing.

The Mikrofill MINI SPU230 - 3 bar. is a compact, digital pressurisation unit for domestic and light commercial sealed systems — covering LPHW, CHW, refrigeration and industrial cooling.

Wall-mounted for easy install and commissioning, it delivers a 3.0 Bar cold fill and integrates a 2 Ltrs tank, making it ideal for systems up to 6,000 Ltrs.

• Digital control with LED display
• Automated top-up for consistent pressure
• High-flow, KIWA-approved fill valve
• Category 5 backflow protection (Type AB air gap)

Outlet can be configured left or right using the supplied flexible hose, keeping installs neat in tight plant spaces.

The Mikrofill MIDI SPU135 Pressurisation Unit is a versatile pressurisation unit for larger domestic and light commercial sealed systems — covering LPHW, CHW, refrigeration and industrial cooling. Floor or wall mountable.

Its compact design allows wall or floor mounting for fast installation and commissioning. An advanced digital control system with automated fill and top-up ensures precise pressure management, supported by a high-flow, KIWA-approved fill valve and flexible connection options.

• Mid-range power for systems up to 150,000 Ltrs
• Digital control with LCD display
• Automated system fill & top-up
• Compact footprint — wall or floor mount

With an 8 Ltrs integral tank and cold fill capability to 4.1 Bar, inlet and outlet can be configured left or right using the supplied flexible hoses. Category 5 backflow protection (Type AB air gap) adds safety and compliance.

The Mikrofill MIDI SPU135 Pressurisation Unit is a versatile pressurisation unit for larger domestic and light commercial sealed systems — covering LPHW, CHW, refrigeration and industrial cooling. Floor or wall mountable.

Its compact design allows wall or floor mounting for fast installation and commissioning. An advanced digital control system with automated fill and top-up ensures precise pressure management, supported by a high-flow, KIWA-approved fill valve and flexible connection options.

• Mid-range power for systems up to 150,000 Ltrs
• Digital control with LCD display
• Automated system fill & top-up
• Compact footprint — wall or floor mount

With an 8 Ltrs integral tank and cold fill capability to 4.1 Bar, inlet and outlet can be configured left or right using the supplied flexible hoses. Category 5 backflow protection (Type AB air gap) adds safety and compliance.

The Mikrofill MIDI SPU135 Pressurisation Unit is a versatile pressurisation unit for larger domestic and light commercial sealed systems — covering LPHW, CHW, refrigeration and industrial cooling. Floor or wall mountable.

Its compact design allows wall or floor mounting for fast installation and commissioning. An advanced digital control system with automated fill and top-up ensures precise pressure management, supported by a high-flow, KIWA-approved fill valve and flexible connection options.

• Mid-range power for systems up to 150,000 Ltrs
• Digital control with LCD display
• Automated system fill & top-up
• Compact footprint — wall or floor mount

With an 8 Ltrs integral tank and cold fill capability to 4.1 Bar, inlet and outlet can be configured left or right using the supplied flexible hoses. Category 5 backflow protection (Type AB air gap) adds safety and compliance.

The Mikrofill MIDI SPU135 Pressurisation Unit is a versatile pressurisation unit for larger domestic and light commercial sealed systems — covering LPHW, CHW, refrigeration and industrial cooling. Floor or wall mountable.

Its compact design allows wall or floor mounting for fast installation and commissioning. An advanced digital control system with automated fill and top-up ensures precise pressure management, supported by a high-flow, KIWA-approved fill valve and flexible connection options.

• Mid-range power for systems up to 150,000 Ltrs
• Digital control with LCD display
• Automated system fill & top-up
• Compact footprint — wall or floor mount

With an 8 Ltrs integral tank and cold fill capability to 4.1 Bar, inlet and outlet can be configured left or right using the supplied flexible hoses. Category 5 backflow protection (Type AB air gap) adds safety and compliance.

The Mikrofill MAXI AP 280 Pressurisation Unit is a high-capacity, floor-standing solution for large domestic, commercial and industrial sites. It maintains stable pressure across sealed LPHW, CHW, refrigeration and industrial cooling systems.

Quick to install and commission, MAXI AP 280 uses an advanced microprocessor-controlled platform with Ai100 technology for accurate, efficient management. Choose single or twin-pump configurations with intuitive digital controls and real-time status.

• BMS-ready: Modbus RTU plus 4 programmable volt-free relays
• Cold fill options: up to 3.9“8.0 Bar (model dependent)
• Protection: Category 5 backflow with Type AB air gap
• Robust build: powder-coated steel casing with adjustable feet

Self-diagnostics and leak detection (frequency-of-starts alarm) support long-term reliability, while enhanced models integrate seamlessly with Building Management Systems.

The Mikrofill MAXI AP 280 Pressurisation Unit RH is a high-capacity, floor-standing solution for large domestic, commercial and industrial sites. It maintains stable pressure across sealed LPHW, CHW, refrigeration and industrial cooling systems. This unit is a right hand entry.

Quick to install and commission, MAXI AP 280 uses an advanced microprocessor-controlled platform with Ai100 technology for accurate, efficient management. Choose single or twin-pump configurations with intuitive digital controls and real-time status.

• BMS-ready: Modbus RTU plus 4 programmable volt-free relays
• Cold fill options: up to 3.9“8.0 Bar (model dependent)
• Protection: Category 5 backflow with Type AB air gap
• Robust build: powder-coated steel casing with adjustable feet

Self-diagnostics and leak detection (frequency-of-starts alarm) support long-term reliability, while enhanced models integrate seamlessly with Building Management Systems.

Built for sealed heating and chilled water plant requiring automatic top-up, this Flexfiller Mini 230 G4 delivers reliable performance with a tidy, installer'friendly form.

Engineered for day'to'day plantroom demands, it helps maintain stable operation, protects equipment, and simplifies maintenance.

• Digital control and monitoring
• Automatic cold-fill top-up
• Compact wall-mounted format

Pair with suitable isolation, safety devices and treatment to meet site requirements and best practice.

Designed to be compact and enclosed, the Flexfiller Midi pairs an electronic pressure transducer with a user-friendly microprocessor to maintain minimum system pressure with precision.

Wall-mounted top-up pressurisation unit, with a 4 Ltrs internal break tank, the unit delivers flow rates up to 12 L/min. It suits commercial, industrial and large domestic installations and is available in single or twin-pump configurations for sealed LPHW/CHW, refrigeration and process systems (guide volume up to 50,000 Ltrs).

• Digital control with electronic pressure transducer
• 4 Ltrs break tank; up to 12 L/min top-up
• MODBUS RTU integration; password-protected access
• Category 5 protection (AB weir overflow)

A compact white (RAL 9003) enclosure simplifies installation and commissioning, while diagnostics, logging and BMS-friendly comms streamline ongoing operation.

The Mini Pressurisation Unit is a compact wall mounted unit housing either one or two small pressurisation pumps and associated control equipment for connecting to small Heating or Cooling installations within large domestic dwellings or small industrial / commercial installations.