Friction loss for water flow through plastic schedule 40 PVC pipe:
The calculation is based on the Hazen-Williams Equation with a Hazen-Williams coefficient c = 140.
Velocities between 7 to 10 feet per second are common. In general velocities above 5 feet per second should be avoided.
- 1 gal (US)/min =6.30888x10-5 m3/s = 0.0227 m3/h = 0.06309 dm3(litre)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min
- 1 ft/s = 0.3048 m/s
- 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC) = 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 2.307 Ft. H2O
Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more.
Hot and cold water service systems - design properties, capacities, sizing and more.
Standard dimensions and weight of PVC - Polyvinyl Chloride - and CPVC - Chlorinated Polyvinyl Chloride.
Dimensions of CTS - Copper Tube Sized CPVC (Chlorinated Poly Vinyl Chloride) tubes.
Friction head loss (ft/100 ft) vs. water flow in steel, copper and PVC plastic pipes.
Friction head loss (ftH2O per 100 ft pipe) in water pipes can be estimated with the empirical Hazen-Williams equation.
Recommended dimensions hot and cold water pipes.
Pressure drop diagrams for PTFE, PP, PFA and PVDF lined pipes.
Pressure loss (bar/100 m) and velocy in PE, PEH or PVC pipes with water flow.
Friction head loss (ft/100 ft) vs. water flow in plastic pipes like PVC, PP, PE or PEH.
Distance between PVC pipe supports.
Minor loss in PVC and CPVC fittings expressed as equivalent length of straight pipe.
Maximum operating and required burst pressure of PVC - Polyvinyl Chloride - pipe fittings.
Calculate temperature expansion and contraction in PVC piping systems.
Water flow in thermoplastic PVC and CPVC pipes Schedule 40 - friction loss (ft/100 ft, psi/100 ft) and flow velocities at dimensions ranging 1/2 to 16 inches.
Water flow in thermoplastic PVC and CPVC pipes Schedule 80 - friction loss (ft/100 ft, psi/100 ft) and flow velocities at dimensions ranging 1/2 to 16 inches.
Maximum space between supports for PVC, CPVC, PVDF and PP pipes vs. temperature.
Free online tool for designing water supply systems in buildings.
Water velocities in pipes and tubes should not exceed certain limits.