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      2. Feed & Expansion Tanks

        Accommodating expansion in any piping circuit can be done with an open type tank or a closed tank. The Masterflow OET Feed & Expansion tank are the open type which means they are open to atmosphere and thus known also as atmospheric expansion tanks or Open Expansion Tanks (OET). They perform the dual function of “feeding” fresh water into the circuit to replenish it after losses and accommodation of any expansion in the system.

        The water level in the tank will rise and fall according to the expansion. The make-up or Feed function is performed through the side entry float valve which is connected to the main supply allowing fresh water into the tank as the level falls. Open type Feed Tanks must always be installed about a metre above the highest point which in some cases is a challenge and is one reason why they have become less popular in recent times.

        Download Open Expansion tanks Brochure

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        184 Newton Rd?
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        +61 2 9748 2022

        +61 2 9748 2099

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