Pressure Drop Diagram PE, PEH and PVC Pipes

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The pressure drop in PE, PEH and PVC plastic pipes with water can be estimated from the diagram below:

• 1 bar = 10⁵ Pa (N/m²) = 0.1 N/mm² = 10,197 kp/m² = 10.20 m H₂O = 0.9869 atm = 14.50 psi (lb_f/in²) = 10⁶ dyn/cm² = 750 mmHg
• 1 liter/s = 10^-3 m³/s = 3.6 m³/h = 0.03532 ft³/s = 2.1189 ft³/min (cfm) = 13.200 Imp.gal (UK)/min = 15.852 gal (US)/min = 792 Imp. gal (UK)/h

Example - pressure drop in a PEH pipe

The pressure drop in a PEH pipe with inside diameter 250 mm and water flow 50 l/s can be estimated to be approximately 0.035 bar/100 m as indicated in the diagram below. The flow velocity is approximately 1 m/s.

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Related Topics

• Fluid Flow and Pressure Drop - Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more

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