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Chemical Dosing Pumps for Water Plants: Uses, Sizing and Prices
Quick answer: A chemical dosing pump adds a precise amount of chemical to flowing water: chlorine for disinfection, antiscalant to protect RO membranes, or pH correction. H-TECH dosing pumps (1–15 L/h) cost KSh 23,000 to KSh 28,200 in Kenya. Size the pump so it can deliver your required dose at your plant's flow rate.
Key facts
- Price range: KSh 23,000 – KSh 28,200 (1–15 L/h)
- Common uses: chlorine, antiscalant, pH correction, coagulants
- Size: dose rate × plant flow → litres of solution per hour
- Mount on a chemical tank; wear gloves and eye protection
On this page
What a dosing pump is used for
| Chemical | Why |
|---|---|
| Chlorine | Disinfect raw water and storage tanks |
| Antiscalant | Stop scale forming on RO membranes |
| pH correction | Adjust acidic or alkaline water |
| Coagulant | Help filters remove fine particles |
Dosing pump prices
H-TECH dosing pump range (maximum output):
| Capacity | Price |
|---|---|
| 1 LPH | KSh 23,000 |
| 2 LPH | KSh 23,000 |
| 3 LPH | KSh 23,000 |
| 5 LPH | KSh 23,000 |
| 6 LPH | KSh 23,000 |
| 10 LPH | KSh 28,200 |
| 15 LPH | KSh 28,200 |
Current listed prices incl. VAT (updated 30 September 2026). Order: H-TECH Chemical Dosing Pump Range.
Ready-to-order dosing pumps and dosing tank:
| Product | Price |
|---|---|
| Dosing Pump 2l/h | KSh 23,000 |
| Dosing Pump 5l/h | KSh 28,000 |
| Chemical dosing tank | KSh 12,000 |
Current listed prices incl. VAT (updated 30 September 2026).
How to size a dosing pump
- Find your plant flow (for example 1,000 litres per hour).
- Take the dose the chemical supplier recommends.
- Work out how many litres per hour of mixed chemical solution that needs.
- Choose a pump whose maximum output is comfortably above that, so it runs mid-range.
Setup and safety
- Mount the pump on or beside a chemical dosing tank.
- Inject after the feed pump and before filters or membranes, as the design requires.
- Wear gloves and eye protection; label every tank.
- Check the dose weekly with a test kit.
Protecting RO membranes? Read why RO plants need antiscalant.
Frequently asked questions
How much is a dosing pump in Kenya?
H-TECH dosing pumps cost KSh 23,000 to KSh 28,200 depending on capacity.
What size dosing pump do I need?
One whose maximum output is above the solution flow your dose requires at your plant flow rate.
Can one pump dose two chemicals?
No. Use a separate pump and tank for each chemical.
Where is antiscalant injected?
Before the RO membranes, usually after the cartridge filters, as the plant design specifies.