Free Block Flow Diagram Maker — Map Stages

See it work

Block flow diagram examples.

Same tool, four requests. Every drawing below is a real render.

What you type

A municipal wastewater treatment block flow diagram with raw wastewater, aeration air, coagulant and return activated sludge entering a liquid treatment train. The train feeds disinfection and treated effluent, and also feeds sludge treatment that produces biogas and biosolids.

Then tryAdd a tertiary filtration block before disinfectionAdd a solids dewatering block after sludge treatment

Control-systems block diagram: Municipal wastewater treatment

Control-systems block diagram · Ogata / standard controls textbook convention · schematex-blockdiagram

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The drawing

What a block flow diagram is.

A block flow diagram gives a high-level view of a process. Each block represents a major operation or grouped process train, and the arrows show the material or energy streams that connect them.

It is useful at the start of a process design because it communicates scope, inputs, products, byproducts and recycles without pretending to be a detailed piping drawing. Add equipment, control loops and line information later in a process-flow diagram or P&ID.

Standard: Ogata / standard controls textbook convention
Engine: schematex-blockdiagram
Editable: Double-click text, drag nodes
Export: SVG · PNG · PDF

Control-systems block diagram: What a block flow diagram is

Who uses it

Who uses block flow diagrams.

Process engineers

Early process concepts, feasibility studies and design reviews that need major streams rather than pipe-level detail.

Plant operations teams

A shared overview of how inputs, products and byproducts move through a production process.

Project stakeholders

The boundaries and outputs of a treatment or processing plant before detailed engineering begins.

How it works

How to make a block flow diagram in three steps.

Describe it

One paragraph is enough to start.

“A municipal wastewater treatment block flow diagram with raw wastewater, aeration air, coagulant and return activated sludge entering a liquid treatment train. The train feeds disinfection and treated effluent, and also feeds sludge treatment that produces biogas and biosolids.”

See the drawing

Drawn by the right engine.

Say what changes

Every edit keeps a version.

Add a tertiary filtration block before disinfection

V2 · DRAWN FROM V1, NOTHING RETYPED

FAQ

Common questions

What is a block flow diagram used for?

A block flow diagram gives a high-level overview of an industrial process. It shows major operations as labeled blocks and the material or energy streams connecting them.

How is a block flow diagram different from a P&ID?

A block flow diagram shows only the main stages and streams. A P&ID adds detailed piping, valves, instruments, control loops and equipment information used for design and operation.

What should I include in a block flow diagram?

Include the main process stages, important feeds, products, byproducts and recycle streams. Group lower-level operations when they are not needed for the purpose of the diagram.

Which industries use block flow diagrams?

They are used in chemical processing, oil and gas, water treatment, food production, pharmaceuticals, energy and other industries that need to communicate a process at summary level.

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