Available pressure difference
The pressure difference available for pipe friction (Σ(l*R+Z)V) and individual resistances Σ(Z) in a flow path from the starting point (usually the water meter) to the tapping valve.
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Symbol or abbreviation: |
Δpv |
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Usual unit: |
hPa |
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Equation |
ΔpV=Σ(l*R+Z)V |