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PID · THREE TANK GRAVITY OVERFLOW

Three-Tank Gravity Overflow System Diagram Examples

A three-tank gravity overflow system uses elevation differences to transfer liquid from one tank to the next without pumps. These P&ID examples show common configurations—like brewery wort cooling cascades—and help you design or document your own overflow system.

1 EXAMPLE· UPDATED 2026-09-18
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P&ID

Brewery Wort Cooling Three-Tank Cascade Gravity Overflow System

ABOUT

About these examples.

Browse the example below to see how tanks, pipes, valves, and instrumentation are represented, then click "Make your own" to start from scratch or adapt the example.

HOW TO

Make one yourself.

  1. 1

    Open the P&ID maker

    Launch the diagram tool and choose a blank canvas or start from the provided three-tank overflow example.

  2. 2

    Place the three tanks

    Drag tank symbols onto the canvas and arrange them at different heights to represent the gravity cascade.

  3. 3

    Connect the overflow lines

    Draw pipes from the upper tanks to the lower tanks, adding check valves or control valves as needed.

  4. 4

    Add instrumentation and labels

    Insert level sensors, temperature probes, and tags to fully document the system.

  5. 5

    Export or share

    Download your diagram as PNG, SVG, or PDF, or share a live link for collaboration.

FAQ

Frequently asked questions

What is a three-tank gravity overflow system?01
It's a setup where three tanks are arranged at different elevations so liquid flows from the highest to the lowest purely by gravity, often used for sequential processing or cooling.
How does gravity overflow work in a multi-tank cascade?02
Each tank has an overflow outlet near its top. When the liquid level exceeds that height, it spills into the next lower tank, maintaining a constant level in the upper tank.
What are common applications of three-tank gravity overflow systems?03
They are used in brewing (wort cooling), water treatment, chemical dosing, and any process requiring passive liquid transfer between stages without pumps.
Can I edit the example diagram to match my process?04
Yes, the example is fully editable. Click 'Make your own' to load it into the editor, then modify tank sizes, pipe routes, labels, and instrumentation as needed.
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Open the AI editor and describe what you need — export PNG/SVG when you're done.

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