Flexfiller 125D Unit | National Pumps & Boilers

The Flexfiller 125D is a pressurisation unit that automatically maintains the correct water pressure in sealed heating systems. It keeps the system topped up and running efficiently without the need for manual checks. Key benefits: • Automatically monitors and adjusts heating system pressure • Digital display provides clear, real-time pressure readings • Built-in safety controls prevent dangerous over-pressurisation • Compact design fits neatly in plant rooms and utility spaces • Minimal maintenance required for long-term reliable operation Essential equipment for commercial heating systems in offices, schools, and large buildings where stable pressure supports efficient, trouble-free performance.