Filling valve for automatic system filling Afriso FAM G½ (model 42406)

The Afriso FAM G½ filling valve (model 42406) is an automatic system filling device designed for controlled replenishment of fluid in closed heating and cooling installations. It connects via a G½ threaded inlet and is made to maintain system pressure by automatically admitting makeup water when pressure drops below a set level. The valve is suitable for residential and light-commercial HVAC and boiler systems where steady operating pressure and safe, hands-off refilling are required.

Advantages

The filling valve provides stable pressure management without constant manual intervention, reducing the need for frequent checks. Its screw-in G½ connection ensures compatibility with standard plumbing fittings. The valve design minimizes the risk of overfilling by admitting fluid only when necessary, and it helps protect pumps and heat exchangers from damage caused by low-pressure operation. Materials and construction are selected for reliable performance in closed heating and cooling circuits.

Suitable for

• Residential heating systems and domestic boilers
• Small commercial HVAC installations
• Closed-loop cooling systems
• Automatic pressure maintenance in sealed circuits

Key specifications

• Connection type: G½ threaded inlet
• Function: Automatic refill / pressure maintenance
• Intended application: Closed heating and cooling installations
• Suitable system types: Residential and light-commercial HVAC and boiler systems

How to use

Install the Afriso FAM G½ filling valve on the supply line to the closed system using the G½ threaded connection, ensuring proper sealing and alignment with existing fittings. Set up the valve according to system pressure requirements and manufacturer’s installation instructions: mount at an accessible location, connect to the cold water supply, and verify that the valve is oriented and secured correctly. Once installed, the valve will automatically admit water to restore pressure when the system falls below the set threshold; observe initial operation to confirm correct function and absence of leaks.

Usage recommendations

Use with potable water supplies only where specified, and fit appropriate backflow prevention or check valves when required by local regulations. Inspect connections after installation and periodically check for leaks. For specific adjustment, maintenance intervals, or compatibility with treated fluids, refer to Afriso documentation and local installation codes.