Mikrofill 3 PRO - Pressurisation Unit - Compact - Wall Mounted - 9 Bar. - 12 l/min - 230V

A fully automatic sealed system water management unit, the Mikrofill 3 PRO provides intelligent pressurisation for domestic and commercial heating and cooling installations. Compact and straightforward to commission, it employs integrated pressure and flow sensors with smart fault logic to deliver accurate system monitoring, early leak detection, and automated pressure maintenance with minimal maintenance overhead.

With WRAS approval (no. 2307805) and Fluid Risk Category 4 backflow prevention, the Mikrofill 3 PRO is fully compliant for sealed system applications. Its full-colour 3.95" LCD display, MODBUS RTU connectivity, and four customisable BMS output contacts make it equally well suited to standalone domestic use and building management integration.

• WRAS Approved — Fluid Risk Category 4 backflow prevention (approval no. 2307805)
• Maximum cold fill pressure: 8.7 Bar (maximum inlet/operating pressure: 9 Bar)
• Maximum flow rate: 12 l/min with live flow readings (±3% accuracy)
• Full-colour 3.95" LCD display with comprehensive electronic pressure management
• Leak detection, smart fault logic, usage monitoring, and time/date-stamped event history
• MODBUS RTU plus 4 customisable BMS outputs and volt-free contacts
• Supplied with wall mount backing plate and 2 braided hoses with integrated isolation valve

Key Product Features

• Fully automatic sealed system pressurisation unit
• Maximum operating pressure: 9 Bar
• Pressure setting resolution: ±0.1 Bar
• Low inlet pressure cut-out: 0.3 Bar
• Full-colour 3.95" LCD with password-protected user access
• High/low pressure fault indication, flood protection
• Usage monitor with fill volume logs — up to 100 parameter change/fault records
• 230V / 1ph / 50Hz supply — IP55 rated
• Connections: 15mm compression inlet and system; 22mm compression drain
• Ambient operating temperature: 5–45°C; system water: 5–85°C
• Dimensions: 250mm (W) x 155mm (D) x 290mm (H to connections)
• Weight: 5.3 kg
• UK manufactured — 2 Year guarantee

Mikrofill is a leading UK manufacturer of pressurisation units and sealed system water management equipment, widely specified across commercial and domestic heating and cooling installations. For further information visit Mikrofill or contact the Pumpify sales team.