Mechanical Identification

Read revision 3

Revision 3 · Oct 19, 2026 +2 −2

Remake batch 25 and its neighbor re-points, batch 24 where missing, and the adopted-electrical-code parameter: brought in line with the authoring repository
Showing changes from Rev 2 to Rev 3 in Mechanical Identification.
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title: Mechanical Identification
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description: >
When to use: identification of mechanical systems in commercial, institutional, and industrial work — pipe markers for HVAC hot/chilled/condenser water, steam, condensate, refrigerant, natural gas, fuel oil, glycol, compressed air, and process fluids; ductwork labels for supply, return, exhaust, and outside air; valve tags with numbered schedules; equipment nameplates for mechanical rooms and field-mounted equipment; flow-direction arrows; and color-coded content banding, on new construction, renovation, and fit-out.
− Not intended for: fire suppression piping and sprinkler valve signs (sync/common-work-results-fire-suppression); plumbing piping identification (sync/plumbing-piping-identification); electrical equipment and conductor identification (sync/equipment-labeling); instrument and process-loop tag numbering (sync/instrument-installation-and-tubing); insulation jacket color banding (sync/mechanical-insulation); ductwork construction (sync/hvac-ductwork); hydronic system construction (sync/hydronic-piping); egress and life-safety signage (sync/signage-and-egress-markings); and TAB data plates (sync/testing-adjusting-and-balancing).
+ Not intended for: fire suppression piping and sprinkler valve signs (sync/common-work-results-fire-suppression); plumbing piping identification (sync/plumbing-piping-identification); electrical equipment labels (sync/equipment-labeling); conductor and raceway identification (sync/electrical-identification); instrument and process-loop tag numbering (sync/instrument-installation-and-tubing); insulation jacket color banding (sync/mechanical-insulation); ductwork construction (sync/hvac-ductwork); hydronic system construction (sync/hydronic-piping); egress and life-safety signage (sync/signage-and-egress-markings); and TAB data plates (sync/testing-adjusting-and-balancing).
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- Fire suppression piping markers and sprinkler control-valve signs — see NFPA 13 and [[sync/common-work-results-fire-suppression]].
- Plumbing piping identification (domestic cold and hot water, sanitary, storm, and gas at plumbing fixtures) — see [[sync/plumbing-piping-identification]].
−- Electrical equipment labels, arc-flash labels, conductor identification, and conduit marking — see [[sync/equipment-labeling]].
+- Electrical equipment labels and arc-flash labels — see [[sync/equipment-labeling]]; conductor identification and conduit marking — see [[sync/electrical-identification]].
- Instrument tag numbering, process loop tags, and impulse tubing identification — see [[sync/instrument-installation-and-tubing]].
- Insulation jacket color banding integral to the insulation — see [[sync/mechanical-insulation]]; identification under this standard is installed over completed insulation.
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- Editable color and valve tag schedules
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