Pressure loss tablePressure loss in metres, feet, bar and psi for a chosen pipe length for different flow rates and pipe boresChoose pipe length to suit your circumstancesBased on the Wavin flow chart for high and low density PE pipes - using the Colebrook-White formulaPipe length750metresFlow rate in gals per minuteFlow rate m3 per hourHead loss per 1000 meters 20mm bore pipingHead loss per 1000 meters 25mm bore pipingHead loss per 1000 meters 32mm bore pipingHead loss per 1000 meters 40mm bore pipingHead loss per 1000 meters 50mm bore pipingmetresfeetbarpsimetresfeetbarpsimetresfeetbarpsimetresfeetbarpsimetresfeetbarpsi1.100.30929.5290.881594267812.78311688312.0256.6440250.19835871032.87620129870.4051.3288050.03967174210.57524025970.21750.71361750.02130519480.30892532470.08250.27068250.00808128080.11717857142.570.739127.9593.820241827155.39350649358.47527.8064750.830167935512.03743506491.85.90580.17631885362.55662337660.92.95290.08815942681.27831168833.37511.0733750.33059785044.79366883123.671.00075246.0757.3466188983106.5259740261859.0581.763188535625.56623376623.4511.319450.33794446934.90019480521.85.90580.17631885362.55662337660.5851.9193850.05730362740.83090259745.501.50035.25115.655253.452910882250.06720779226.97522.8849750.68323555759.90691558443.4511.319450.33794446934.90019480521.23.93720.11754590241.70441558447.332.00063.75209.163756.244626063690.547077922111.62538.1416251.138725929216.5115259746.4521.162450.63180922539.16123376621.956.397950.19101209142.76967532479.172.50017.2556.597251.689722346624.500974026929.5290.881594267812.783116883139.8430.29386475594.26103896111.003.00024.7581.204752.424384236535.153571428612.7541.832751.248925212718.10941558444.213.78020.41141065835.965454545514.674.00042137.8024.114106583159.65454545452168.9012.057053291529.82727272737.12523.3771250.697928795310.119967532518.335.00063.75209.163756.244626063690.547077922132.25105.812253.159046126345.806168831211.62538.1416251.138725929216.511525974

Master sheetFigures got from the Wavin Chart for HDPE and LDPE pipesFlow rate in gals per minuteFlow rate m3 per hourHead loss per 1000 meters 20mm bore pipingHead loss per 1000 meters 25mm bore pipingHead loss per 1000 meters 32mm bore pipingHead loss per 1000 meters 40mm bore pipingHead loss per 1000 meters 50mm bore pipingmetresfeetbarpsimetresfeetbarpsimetresfeetbarpsimetresfeetbarpsimetresfeetbarpsi1.100.3012.002.700.540.290.112.570.752112.41.24.53.671.000100244.62.40.785.501.500479.34.61.67.332.0008515.58.62.69.172.5002312411.003.00033175.614.674.00056289.518.335.000854315.5