💡 Why Dosing Pumps Are the Unsung Heroes of Water Treatment

In every water treatment system — whether it’s a cooling tower, RO plant, STP, ETP, or WTP — there’s one small but crucial component that keeps the process safe, stable, and efficient:

👉 The Chemical Dosing Pump

While often treated as a secondary item, the dosing pump plays a central role in ensuring the right chemical is injected, in the right amount, at the right time.

🔎 What Exactly Is a Dosing Pump?

A dosing pump is a precision device designed to meter and inject chemicals into a water line or tank. It works on either a mechanical stroke or a solenoid-driven to deliver small, accurate doses of chemicals like:

✔ Chlorine ✔ Antiscalant ✔ Acid / Alkali ✔ Lime ✔ Alum ✔ Coagulants / Polymers ✔ Biocides ✔ PAC or SMBS

The goal is to maintain water quality, prevent fouling, support treatment reactions, and meet safety standards.

🔧 Where Dosing Pumps Are Used

🟢 Cooling Towers – For antiscalant, biocide, and pH control to prevent corrosion and biological growth.

🔵 STP/ETP Plants – For chemical dosing in pH adjustment, flocculation, coagulation, or odor control.

🟣 WTP Plants – For chlorine dosing, PAC, lime or soda ash for hardness & disinfection.

🟠 RO Plants – For antiscalant, acid dosing, and membrane protection.

🟡 Swimming Pools, Boilers, Process Lines – Where precise, repetitive chemical injection is required.

⚠ Common Dosing Pump Mistakes

❌ Selecting the wrong pump capacity or pressure

❌ Using materials incompatible with the chemical

❌ No non-return valve or foot valve

❌ Inconsistent suction line length or air blockages

❌ Running dry or without maintenance

✅ How to Select a Good Dosing Pump

✔ Know your chemical typeand its compatibility

✔ Match the required flow (LPH) and pressure (BAR)

✔ Decide between manual, solenoid, or plunger type

✔ Always check for foot valve, injection valve, and air release features

✔ Choose brands that offer replaceable parts and technical support

💼 At Infinity Equipments

We manufacture and supply a full range of chemical dosing pumps — from solenoid-driven compact models to mechanical & plunger-type dosing pumps for industrial systems.

Our goal: To ensure your dosing is accurate, safe, and built to last.