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

Design Features

Available in 7 standard sizes.

Supplied as a kit with tank, lid, float valve, safe tray and durable supports for inside the tray underneath the tank to allow water to flow to drain. Bolt down lid for outdoor installation.

  • Accessories

    • Tank Stands
    • Heavy duty frames made from galvanised steel for durability.
    • Treated timber decking gives optimum tank support.
    • Legs can be bolted down.
    • Wall bracket can be bolted straight to an existing wall, provided that wall strength allows.
    • Custom made stands also available on request.
    • Standard size is 1000mmL x 450mmW x 530mmH.

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Accessories

  • Heavy duty frames made from galvanised steel for durability.
  • Treated timber decking gives optimum tank support.
  • Legs can be bolted down.
  • Wall bracket can be bolted straight to an existing wall, provided that wall strength allows.
  • Custom made stands also available on request.
  • Standard size is 1000mmL x 450mmW x 530mmH.

We look forward to the opportunity of assisting you.

Please contact us with your requirements; we are always ready to listen.