Engineering selection guide
How to Select a Gasoline or Diesel Water Pump
For off-grid pumping, pair the required flow and head with a suitable gasoline or diesel engine, suction arrangement and connection size. Engine horsepower and outlet diameter alone do not establish performance.
A practical selection sequence
1. Define the water-transfer duty
State required flow and total dynamic head at the same point, source and delivery elevations, suction-pipe length, discharge hose length and run time. Identify clean water, muddy water or solids-bearing service so the pump end can be checked.
2. Check the engine and site
Say whether gasoline or diesel is preferred and describe fuel availability, expected operating hours, altitude and ambient temperature. Confirm the exact engine's rated output under site conditions, fuel use and servicing needs.
3. Check suction, hose and connection
Provide the proposed 1, 2, 3, 4 or 6-inch connection size, hose diameter, suction lift and priming arrangement. An oversized discharge hose can reduce friction, but a larger port alone does not guarantee higher flow at the required head.
4. Verify the exact pump-engine pairing
Request the current flow–head curve, power requirement, allowed suction lift, dimensions and operating instructions. The range's highest listed flow and head are separate limits and are not one simultaneous 20 HP duty point. Plan outdoor exhaust ventilation and safe fuel handling.
Frequently asked questions
Will a 20 HP pump deliver 160 m³/h at 160 m head?
Do not assume so. Those figures are separate maxima across the range; ask for the exact pump-engine curve at your duty point.
Can an engine-driven water pump transfer gasoline?
No such approval is implied. This range is for water pumping; fuel-transfer suitability needs a separately approved pump.
Engineering background
These references explain general pump-selection principles; they do not certify a JIABO product or replace its current datasheet.
Confirm all final selections against the exact model’s latest performance curve, material specification and installation instructions.