The scenario
A restoration shop needs a clear P&ID of the fuel supply path for a 1970 Chevrolet Chevelle with a carbureted V8, including tank, mechanical pump, filter, and carburetor inlet pressure monitoring.
What is in this drawing
Read the decisions behind it.
01
Represented the carburetor float bowl as a vessel_h because the schematex-pid catalog has no dedicated carburetor symbol.
02
Selected pump_pd to reflect the original engine-driven diaphragm pump rather than a centrifugal pump.
03
Added local pressure indicator PI-101 on the carburetor inlet line to capture the critical fuel delivery parameter without a control loop.
Use this as a base when diagramming classic carbureted fuel systems with mechanical pumps and local gauges; swap pump/filter details for EFI returnless or return-style systems as needed.
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