Chemical Dosing Pumps – Precision Metering Pumps for Water Treatment, Industrial & Process Applications
COYON industrial chemical dosing pumps deliver ±1% accuracy, corrosion-resistant reliability, and seamless system integration for a wide range of applications—from municipal wastewater disinfection and RO antiscalant injection to pH control in food processing and boiler treatment in power plants. With over 20 years of engineering expertise and 5,000+ units installed globally, we offer the right dosing pump for every chemical, flow rate, and pressure requirement.
-
![Dosing Pump for Chemical]()
Dosing Pump for ChemicalIn water, wastewater, and industrial process applications, inconsistent chemical feed can lead to poor treatment performance, regulatory non-compliance, and unnecessary chemical waste. Ourread more -
![Chemical Dosing Pump for Water Treatment Plant]()
Chemical Dosing Pump for Water Treatment PlantIn any water or wastewater treatment plant—whether a municipal plant, industrial facility, or RO desalination unit—reliable chemical dosing is non-negotiable. Under-dosing risks poor effluentread more -
![Dosing Pump for RO Plant]()
Dosing Pump for RO PlantIn reverse osmosis (RO) plants, even minor chemical dosing errors can lead to membrane scaling, fouling, or irreversible damage—causing costly downtime and reduced water recovery. Our chemical dosingread more
What are Chemical Dosing Pumps?
Chemical dosing pumps (often called Metering Pumps) are specialized devices used to inject precise amounts of chemicals into a fluid (usually water or wastewater) at a specific rate.
Our stock of chemical dosing pumps are small water pumps that precisely inject chemicals or other reagents into water. These pumps are part of a chemical dosing system, which typically includes one or more pumps, a storage tank, piping, and a display screen.
COYON offers a wide range of chemical dosing pumps to help you find the ideal choice for your metering needs. For high and low pressure commercial and industrial applications, choose adjustable, high-precision, and low-flow dosing pumps. If you are looking for high-quality chemical dosing pumps, COYON is the ideal choice.
Two Main Types of Chemical Dosing Pumps
For wastewater and industrial treatment, you will primarily encounter two types:
| Diaphragm Pumps (The Industry Standard) | Peristaltic Pumps (The Hose Pump) |
| * Mechanism: A flexible rubber/Teflon diaphragm moves back and forth. * Best For: Clean liquids like PAC, acids, caustics, and bleach. * Pros: Can handle high pressure (injecting into a pipeline), no leakage along the shaft. * Cons: The check valves can clog if the chemical has solids. |
* Mechanism: Rollers squeeze a flexible hose, pushing the liquid through. * Best For: Viscous liquids (PAM/polymers) or liquids with small solids (lime slurry). * Pros: No valves to clog, can run dry without damage, self-priming. * Cons: The hose wears out over time; lower pressure capability. |
Chemicals We Safely Dose Across Industries
* Water & Wastewater: PAC, PAM, NaOCl, H₂SO₄, NaOH, antiscalants, sodium bisulfite
* Food & Beverage: Caustic soda (CIP), nitric acid, sanitizer solutions, CO₂
* Power & Energy: Oxygen scavengers, ammonia, hydrazine, phosphate, amine
* Chemical Processing: Catalysts, additives, pH adjusters, inhibitors
* Pulp & Paper: Bleach, retention aids, defoamers, alum
* Swimming Pools & Aquaculture: Chlorine, pH adjusters, algaecides
Send us your chemical SDS—we’ll confirm material compatibility before you order.
Industry Applications
* Municipal Water Treatment: Disinfection (chlorine), fluoridation, corrosion control
* Wastewater Plants: Coagulation/flocculation, pH adjustment, sludge dewatering
* Reverse Osmosis (RO) & Desalination: Antiscalant, acid, dechlorination
* Food & Beverage: CIP cleaning chemical injection, product additive dosing
* Power Generation: Boiler feedwater and cooling tower chemical treatment
* Industrial Manufacturing: Process water conditioning, effluent neutralization
Why Partner With Us?
More Than a Supplier—Your Dosing Solutions Partner</h2>
* 5,000+ dosing pumps installed in 20+ countries
* Free chemical compatibility review with every inquiry
* Factory testing under simulated conditions
* Global spare parts network—diaphragms shipped in 48 hours
* 24-month warranty & lifetime technical support
* OEM/ODM services for system integrators and EPC contractors
FAQs of Chemical Dosing Pumps
Q1: What’s the difference between a diaphragm pump and a peristaltic pump for chemical dosing?
A: Diaphragm pumps use a flexible membrane to move fluid—ideal for high-pressure applications (e.g., RO, wastewater). Peristaltic pumps squeeze tubing—great for ultra-pure or abrasive fluids but limited to low pressure (<10 bar) and shorter tube life. For most industrial water treatment, diaphragm pumps offer better durability and cost of ownership.
Q2: Can I use one pump for multiple chemicals?
A: No. Cross-contamination can cause dangerous reactions (e.g., acid + bleach = chlorine gas). Always use dedicated pumps for each chemical. Our multi-pump skids keep circuits fully isolated.
Q3: How often do I need to replace the diaphragm?
A: Typically every 12–24 months, depending on chemical aggressiveness and duty cycle. We recommend keeping a spare diaphragm kit on hand. Our PTFE diaphragms last 2–3x longer than standard rubber in harsh applications.
As one of the most professional chemical dosing pumps manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to buy the best chemical dosing pumps for sale here from our factory. Also, custom service is available.
Chemical Dosing Pump for Water Treatment Plant, Diaphragm Metering Pumps, Metering Pumps