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Plumbing Symbols - How To Discuss

Author

Emma Powell

Updated on June 10, 2026

Plumbing Symbols

What are plumbing symbols

Here are the meanings of the most common symbols on plumbing diagrams.

  • Installation. Hydraulic pipes are represented by several lines.
  • Gutter. Drain pipes appear as solid lines when they are above ground.
  • Valves.
  • Water supply.
  • Line of fire.
  • Gas pipeline.
  • Shirts and elbows.
  • ■■■■■■■■ and valves.

What does FLR mean in this context in the healthcare area?

Abbreviations for sanitary and fire protection

Access point access field
FLR floor
PF Fire protection
FPWH Frost resistant wall hydrant
FS On / off switch
What's next to the BOP VVS above? The BOP is used to lay pipes so the excavator knows when to stop digging. The inverter is used to show how a structure drains. TALL. ### (Top of the pipe) is used to find underground pipesAlso knowing what the CW is in the plumbing system?

CW RISER UP (ELBOW) ID conrod DOWN (ELBOW)What does GW mean in healthcare facilities?

EXHAUST TOO FULL. VACUUM STORM (CONDENSED / INDIRECT). EXHAUST PUMPS. SWEEP.

What does HxH mean in the healthcare area?

In gravity, DWV (Drain, Drain or Vented) is the HxH dimension for ■■■■■■■■ that have a bell section at each end. H stands for hub. ■■■■■■■■ that have a bell section at one end and a straight section at the other end are classified as HxS. S stands for corner.

What does EOR mean?

Electronic Warfare Coordinator

What Does PIC Mean in Plumbing?

HVAC Industry Commission

What does SS mean in HVAC?

Plumbing Symbols