The Pump Symbols Legend CAD reference helps engineers, designers, and drafters interpret equipment symbols consistently across process, P&ID, HVAC, and MEP documentation. It is especially useful when reviewing an unfamiliar drawing or building a project-specific symbol library.
Download the DWG legend below as a drafting reference, then confirm symbol usage against the project legend, discipline requirements, and applicable documentation practices.
This Pump Symbols Legend CAD sheet is a handy reference for P&ID, process, and MEP drawings. It includes a wide range of standard symbols for pumps, fans, compressors, blowers, and drivers, helping your drawings stay consistent and easy to understand for engineers, technicians, and commissioning teams.
The legend covers many common equipment types, including:
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Centrifugal pumps (several symbol styles)
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Positive displacement pumps (rotary, gear, progressive, piston/reciprocating)
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Screw pumps, peristaltic pumps, proportioning pumps
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Sump pumps and submersible pumps
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Vacuum pumps and liquid ring vacuum/compressor symbols
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Fans (selectable fan, axial flow fan, fan blades variations)
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Compressors and blowers (reciprocating, rotary, axial)
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Drivers like diesel motor, turbine driver, and motor-driven turbine icons
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ISO-style pump symbol options (centrifugal, gear, diaphragm, progressive, etc.)
Use this CAD legend for:
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P&ID documentation and process schematics
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HVAC/MEP pump room drawings and equipment schedules
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Training and standard templates for drafting teams
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Standardizing symbols across multi-discipline projects
What the pump symbol legend includes
This reference is organized around rotating and positive-displacement equipment, air-moving equipment, vacuum equipment, and the drivers associated with them. The available symbols can support both equipment identification and consistent drawing annotation.
Equipment groups to review
- Pumps: centrifugal, positive displacement, screw, peristaltic, proportioning, sump, submersible, and vacuum pump symbols.
- Compressors and blowers: reciprocating, rotary, axial, and liquid ring equipment representations.
- Fans: selectable fan, axial-flow fan, and fan-blade variations.
- Drivers: motor-driven turbine, turbine driver, and diesel motor icons.
- ISO-style options: alternate representations for centrifugal, gear, diaphragm, progressive, and related pump types.
How to use the CAD legend in a drawing set
Use the DWG file as a visual reference when preparing P&IDs, process schematics, pump-room layouts, equipment schedules, and drafting templates. Before issuing a drawing, check that the selected symbol matches the equipment description and that the project legend explains any symbols that may be unfamiliar to reviewers.
This resource also pairs well with internal references covering P&ID terminology, pipe and fitting symbols, flange references, and CAD/DWG drafting practices. Keep symbol selection separate from equipment sizing, piping design, control philosophy, and mechanical verification; those decisions require project-specific engineering information.
Practical review checklist
- Confirm that the symbol identifies the intended equipment category.
- Use consistent symbol treatment across related drawings and disciplines.
- Coordinate the symbol with the equipment tag, schedule, and process description.
- Check that driver and accessory representations are clear where they affect drawing interpretation.
- Retain the project legend as the controlling explanation for issued documents.
Frequently asked questions
What is a pump symbols CAD legend used for?
It is a visual drafting reference for selecting and interpreting pump, fan, compressor, blower, and driver symbols in P&ID, process, HVAC, and MEP drawings.
Does the DWG include only pump symbols?
No. The reference also includes fans, compressors, blowers, vacuum equipment, and several driver icons, along with ISO-style pump symbol options.
Can this legend replace a project drawing legend?
No. Use it as a drafting aid, but follow the project-specific legend and documentation requirements for issued drawings.
Can the symbols be used for equipment selection or sizing?
No. A symbol communicates equipment type and drawing intent; it does not establish capacity, duty, materials, controls, or other design requirements.
Where is this reference most useful?
It is useful for P&ID documentation, process schematics, pump-room drawings, equipment schedules, drafting templates, and coordination between engineering disciplines.