There ‘re more than 200 plumbing pipe and fitting symbols that’re used on P&IDs ( piping and instrument diagrams ). That is many more than we can cover here individually, but we will cover some of the basics.
| Symbol | Name | Real World Example |
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90 Deg Elbow |  |
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Cap symbol |  |
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Wye symbol |  |
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45 deg elbow |  |
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Union symbol |  |
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Vent symbol |  |
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P-trap symbol |  |
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Tee symbol |  |
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Running trap symbol |
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Pipe going down symbol |
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Pipe going up symbol |
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Pipe guide symbol |
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Pipe tee up symbol small |
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Pipe cross UP DOWN symbol |
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Water closet symbol |
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Floor drain symbol |
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Kitchen sink symbol |
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Lavatory symbol |
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Laundry tray symbol |
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Bushing symbol |
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Concentric reducer symbol |
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Eccentric reducer symbol |
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Expansion joint symbol |
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Flexible connection symbol |
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Curb stop symbol |
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Fire hydrant & isolation valve symbol |
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Compressed air line symbol |
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Gas line symbol |  |
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Sanitary drain above ground Sanitary drain below groundsymbol |
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Sanitary sewer symbol with size and type of pipe |
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Storm sewer symbol with size and type of pipe |
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Water main symbol with size and type of pipe |
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Trap primer symbol |  |
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Floor drain round symbol |
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Floor drain square symbol |
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Funnel floor drain symbol small |
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Funnel drain elevation symbol |
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Hub drain symbol |  |
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Roof drain symbol |  |
Fire Suppression Symbols
Plumbing fixture symbols
Appliance symbols
| Symbol | Name | Real World Example |
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Clothes dryer symbol |  |
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Freezer- chest type symbol |  |
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Clothes washer symbol |  |
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Furnace symbol |  |
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Combination washer dryer symbol |  |
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Refrigerator symbol |  |
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Dishwasher symbol |  |
Plumbing and heating valve symbols
Read Also>> Drawing Schematic symbol
