Pump calculator
Electric motors & triplex pumps
Calculate
Enter a number greater than zero in both fields.
Available flow rate
1,155 litres per hour
10 HP at 200 bar
HP × 385 ÷ bar = L/min
Sizing estimate only. Check the pump’s rated flow, pressure, RPM and required power before selecting a motor.
Formula & power units
Flow (L/min) = HP × 385 ÷ pressure (bar). This rounded factor fits 18 distinct Interpump 47/66 Series ratings within 100–250 bar and 2–20 HP.
HP means metric horsepower (PS/CV), matching the poster: 1 HP = 0.73549875 kW. kW is shaft output, not electrical consumption.
Average absolute flow difference in the sample is about 3.5%, with a largest difference of about 11%. Results outside the sampled range are extrapolations, not verified pump ratings. Allow for drive losses and the required motor margin. Calculated pressure is not a safe operating limit.
Dual Pumps catalogueAdd to your iPhone Home Screen
Open in Safari, tap Share, then Add to Home Screen. If shown, leave Open as Web App switched on, then tap Add.
This is a web app, not an App Store download. An internet connection is required.