At Pumps UK Service, we’re always looking to provide smart, energy-efficient solutions for commercial and industrial water systems. One standout example is the Mikrofill 3 pressurisation unit – a pumpless, wall-mounted unit designed to maintain system pressure in sealed heating and chilled water applications.
Unlike traditional pressurisation units that rely on mechanical pumps, the Mikrofill 3 pressurisation unit connects directly to your mains or boosted water supply. This innovative design eliminates the need for a pump, significantly reducing energy consumption and maintenance.
Pumpless Operation
Connects directly to mains water, removing the need for a pump and simplifying the system design.
Low Energy Consumption
Operates at just 10 watts on standby and 30 watts during filling – up to 97% more efficient than conventional units.
Precise Pressure Management
Features an electronic pressurisation manager, a user-friendly colour display, and a fill volume indicator for accurate water treatment dosing.
Compact Wall-Mounted Design
Ideal for space-constrained plant rooms – just 270 mm tall and 250 mm wide.
Built-In Safety Protection
Includes Category 4 backflow prevention, eliminating the need for an RPZ valve and ensuring compliance with Water Supply Regulations.

- Max Cold Fill Pressure: 4.7 bar
- Inlet Pressure Limit: 5 bar
- Nominal Flow Rate: 14 l/min at 2 bar
- Connections: 15 mm compression inlet/outlet, ¾” BSP drain via tundish
- Power Supply: 230V AC, 50Hz
- Dimensions: 270mm (H) x 250mm (W) x 112mm (D)
- Dry Weight: 5.0 kg
To make ordering even easier, Pumps UK also offers a packaged combination of the Mikrofill 3 pressurisation unit and a matching Reflex N series vessel making ordering easy.

The Mikrofill 3 pressurisation unit is perfect for commercial buildings, schools, hospitals, and any application requiring reliable sealed system pressurisation without the complexity of pumps and RPZ valves. It’s a reliable, low-maintenance choice for modern building services. Adding the Mikrofill 3 to your technical drawings or plantroom designs is easy because you can simply download the files at BIM Objects.
Interested in upgrading to the Mikrofill 3 pressurisation unit or need support maintaining your existing system? Our expert team at Pumps UK Service is here to help. Get in touch for product advice, installation options, or servicing enquiries.
— Contact our Team about Mikrofill 3 Trade Enquiries —
📞 Call us at 01322 292 415
📧 Send us an email at sales@pumpsukltd.co.uk