Lowara Presfix Series

The Lowara Presfix range of pressurisation units is designed to maintain the correct fill pressure within sealed heating and chilled water systems while automatically replacing water lost through leakage or maintenance activities. Developed in accordance with BS7074 Parts 1, 2 and 3, Presfix units help protect HVAC systems by maintaining system pressure and providing high and low pressure safety interlocks for boilers and chillers.

The range includes the Presfix Beta, Presfix Beta Dual System, Mini Presfix, and Micro Presfix, providing solutions for everything from small commercial installations through to large and complex heating and cooling systems. Each unit is supplied with intelligent control functionality, automatic water make-up capability and comprehensive monitoring features, helping to ensure reliable and efficient operation.

Micro and Mini Presfix units provide a compact and cost-effective solution for smaller systems, while the Presfix Beta range incorporates advanced microprocessor control, enhanced monitoring capabilities and optional twin pump configurations for greater system resilience. The Presfix Beta Dual System is specifically designed to manage both heating and chilled water systems from a single unit, reducing installation space and simplifying system management.

Manufactured from durable powder-coated steel and featuring high-quality pumps, integrated break tanks and advanced pressure monitoring, Presfix units provide dependable performance in commercial, industrial and public sector buildings. All models include volt-free contacts for integration with building management systems (BMS), allowing operators to remotely monitor critical system conditions and alarms.

Product Features

• Automatic pressure maintenance and water make-up
• Suitable for sealed heating and chilled water systems
• Boiler and chiller high/low pressure interlocks
• BMS compatible volt-free contacts
• Single and twin pump options available

General Specification

• Supply: 230V, 1 Phase, 50Hz
• Maximum Pressure Range: Up to 8.0 bar
• Construction: Powder-Coated Steel Cabinet
• Control: Digital Pressure Monitoring
• Break Tank: Integrated (model dependent)
• Applications: Heating, chilled water and HVAC systems

Available Presfix Models

 – Presfix Beta

• Advanced microprocessor-controlled pressurisation unit
• Available in 2.8 bar, 5.5 bar and 8.0 bar versions
• Single and twin pump configurations available
• Extensive monitoring, alarm and BMS integration functions

 – Presfix Beta Dual System

• Controls both heating and chilled water systems from one unit
• Available in 2.8 bar, 5.5 bar and 8.0 bar versions
• Space-saving design for multi-system applications
• Full Presfix Beta monitoring and control functionality included

• Mid-range automatic pressurisation unit
• Available as single or twin pump models
• Pressure ranges up to 5.5 bar
• Bronze or composite peripheral pumps with mechanical seals