Vertical Multistage Pumps: What They Are and Where They Are Used
Quick answer: A vertical multistage pump stacks several impellers on one shaft; each stage adds pressure, so it delivers high pressure in a compact upright body. That makes it the standard choice for RO high-pressure feed, building water supply, boiler feed and pressure irrigation. Choose by the flow you need and the total head (pressure), and match single or three phase to your power supply.
Key facts
- Several impellers in series = high pressure
- Used for RO feed, buildings, boilers, irrigation
- Size by flow and total head
- Match single or three phase to your supply
On this page
How It Works
Water enters at the bottom and passes through each impeller in turn. Every stage adds pressure, so more stages mean higher pressure at the same flow. The upright design saves floor space in plant rooms.
Where They Are Used
- RO plants: to push water through the membranes (industrial RO plants).
- Buildings and hotels: pressure boosting to upper floors.
- Boiler feed and process water (boiler feed water).
- Pressure irrigation and washing systems.
CNP Vertical Multistage Pumps
CNP CDLF2-11 Vertical Multistage Pump, 1.1Kw, Single PhaseKSh 85,000
CNP CDLF2-15 Vertical Multistage Pump, 1.5Kw, Single PhaseKSh 115,000
CNP CDLF2-22 Vertical Multistage Pump, 2.2Kw, Single PhaseKSh 95,000
CNP CDMF3-16 Vertical Multistage Pump, 1.5Kw, Single PhaseKSh 110,000
CNP CDMF3-24 Vertical Multistage Pump, 2.2Kw, Single PhaseKSh 130,000
CNP CDLF8-16 Vertical Multistage Pump, 5.5Kw, 3-PhaseKSh 240,000Current listed prices incl. VAT (updated 4 October 2026).
How to Choose
- Flow: litres per hour or m³/h you need at peak.
- Total head: the height to lift plus pipe losses plus the pressure needed at the outlet (for RO, the membrane pressure).
- Read the pump curve so the duty point sits in the efficient middle of the range.
- Power: single-phase models suit smaller sites; larger pumps need three-phase supply.
General pump types: jet vs centrifugal vs submersible.
Protect the Pump
- Never run it dry: fit low-pressure or level protection.
- Filter the water to keep sand out of the stages.
- Use correct cable size and motor protection.
Frequently asked questions
What is a vertical multistage pump used for?
High-pressure duties such as RO feed, building pressure boosting, boiler feed and pressure irrigation.
Why is it called multistage?
It has several impellers in series, each adding pressure.
How do I size a multistage pump?
By the flow needed and the total head (lift, pipe losses and outlet pressure), checked on the pump curve.
Do I need three-phase power?
Larger models need three-phase; smaller ones are available in single phase.