Air separator Afriso FAR 311 with automatic air vent, connection Rp3/4"

Afriso FAR 311 is an air separator designed for hydronic heating and cooling systems. The unit integrates an automatic air vent and Rp3/4" threaded connections to remove entrained air from circulating water. Installed in supply or return lines, the separator helps reduce noise, improve heat transfer efficiency and minimise corrosion by preventing air pockets in radiators, boilers and heat exchangers.

Advantages

The FAR 311 combines a compact body with an internal flow path that promotes separation of microbubbles and larger air pockets. The built-in automatic air vent continuously discharges collected air without manual intervention. The Rp3/4" connections provide compatibility with common residential and light-commercial piping, and the device is constructed for reliable operation in typical hydronic circuit conditions.

Suitable for

• Residential and small commercial hydronic heating systems
• Central heating circuits with radiators and convectors
• Boiler and heat exchanger feed and return lines
• Hydronic cooling systems where trapped air affects performance

When it may not be suitable

The FAR 311 is intended for typical heating and cooling circuits and may not be appropriate for very large industrial systems or process plants that require higher flow capacities or specialised materials. Systems with unusually high concentrations of dirt or particulate matter may reduce separator effectiveness unless adequate filtration is installed upstream.

Key specifications

• Connection type: threaded Rp3/4"
• Function: air separation with automatic venting
• Application: hydronic heating and cooling circuits
• Installation position: inline on supply or return pipework

How to use

Install the Afriso FAR 311 in the pipework where flow velocity allows air to rise into the separator chamber, typically on the return line near the boiler or heat source. Ensure the unit is mounted upright and the automatic vent is accessible. After installation, bleed the system according to standard commissioning procedures then monitor the vent; the device will continuously remove entrained air during operation. Periodic visual inspection and routine system maintenance are recommended to ensure long-term performance.

What to consider before purchase

• Verify pipe thread compatibility with existing Rp3/4" connections
• Confirm flow rates and system size are within typical domestic or light-commercial ranges
• Check that upstream filtration is present if the system contains particulates
• Ensure sufficient space and upright mounting position near the boiler or heat exchanger

Usage recommendations

For optimal performance, install the separator on the return side near the heat source, keep the automatic vent accessible for inspection, and combine the FAR 311 with a suitable strainer or filter when particulate contamination is expected.