Air and Dirt Separator Meibes XStream Vent-Clean DN25 (G1F) – hydraulic separator for heating and cooling systems

Meibes XStream Vent-Clean DN25 (G1F) is an air and dirt separator developed for hydraulic circuits in heating and cooling systems. The compact DN25 unit is engineered to remove entrained air and particulate contaminants from water-based closed-loop systems, improving circulation efficiency and protecting pumps, valves and heat exchangers. Designed for residential and light commercial installations, the Vent-Clean combines a sediment collection chamber with an air separation zone to reduce noise, minimize cavitation risk and extend the service life of system components.

Advantages

The Meibes Vent-Clean provides continuous removal of microbubbles and solid particles without interrupting system operation. Its compact design allows installation in confined spaces while ensuring effective hydraulic separation and low pressure drop. By capturing air and debris, the device reduces pump wear and temperature control disturbances and helps maintain heat transfer efficiency in radiators and coils.

Suitable for

• Domestic central heating systems
• Small commercial heating and cooling circuits
• Hydronic boiler and heat pump installations
• Fan coil and chilled water systems in apartments or offices

Key specifications

• Connection size: DN25 (G1F)
• Function: combination air and dirt separation
• Fluid compatibility: water and water–glycol mixtures suitable for heating/cooling circuits
• Installation orientation: vertical mounting recommended for optimal separation
• Materials: corrosion-resistant internal surfaces for long-term operation
• Maintenance access: removable collection chamber for periodic flushing

How to use

Install the Vent-Clean in the supply or return line where flow velocity and system topology promote effective separation, following hydraulic flow direction markings. Ensure vertical orientation with the collection chamber at the bottom and provide sufficient clearance for maintenance. After installation, bleed trapped air from high points and prime the system according to the system manufacturer’s instructions. Periodically inspect and drain the sediment chamber to remove accumulated particles following local safety and disposal rules.

Usage recommendations

For reliable performance, pair the separator with appropriate line strainers and consider corrosion inhibitors when using glycol mixtures. Schedule routine inspections as part of preventive maintenance and verify compatibility with system pressures and temperatures before installation.