Pressure drop (bar/100 m) and velocy in PE, PEH or PVC pipes
Pressure drop in PE, PEH or PVC plastic pipes or tubes:
- 1 bar = 105 Pa (N/m2) = 0.1 N/mm2 = 10,197 kp/m2 = 10.20 m H2O = 0.9869 atm = 14.50 psi (lbf/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
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.