Expansion tank for domestic water heater 18 l set

Expansion tank, MB wall mount and AirfixControl service fitting included.


Home systems lose tens of thousands of liters of drinking water as expansion water drips through the valve and expansion piping. Flamco Airfix A and D membrane expansion tanks for drinking water systems prevent wastage. Airfix tanks still allow continuous flow, creating a constant circulation. This prevents the formation of bacterial colonies.

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The pre-pressure must be set lower than the 0,2 bar cold water line pressure during commissioning. When commissioned, the water supply moves to the tank already in the cold condition. The water supply ensures low-wear work. Heating must also accommodate the expansion volume.

Display: 200 l hot water boiler, line pressure 4,2 bar, then expansion tank 18 l and pre-pressure 4 bar.

The pre-pressure in the expansion tank must be checked at least once every six months. To do this, the tank must be hydraulically separated from the heating system. Drain the expansion tank and then check the pre-pressure on the air side of the tank with a manometer. The heating system must be equipped with a safety valve with an opening pressure you are not allowed to overcome the permissible operating pressure of the expansion tank and hot water boiler.