PowerPoint Presentationinko.com.sg/image/data/CATALOG/Valve/Backflow-1.pdf · The negative pressure...

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Transcript of PowerPoint Presentationinko.com.sg/image/data/CATALOG/Valve/Backflow-1.pdf · The negative pressure...

Backsiphonage

Common causes of Backpressure:

• Pumps (booster pump),

• Elevation of pressure downstream of the distribution system water to flow

opposite of intended direction.

• Thermal expansion (hot water expansion in the pipeline)

• Etc.

Backpressure

Cross-connections

Cross-connections