A chemical dosing peristaltic pump is a positive displacement pump designed for precise metering of corrosive, viscous, and shear-sensitive chemicals. Unlike diaphragm or gear pumps, it has no valves or seals - fluid contacts only the hose, making it the most reliable solution for chemical dosing in water treatment, chemical processing, and pharmaceutical industries.
Why Use a Peristaltic Pump for Chemical Dosing?
In Europe, over 60% of water treatment plants have switched from diaphragm dosing pumps to peristaltic hose pumps for chemical dosing. The reason is simple:
1. 100% Chemical Resistant
Fluid touches only the inner hose. With hose materials like Viton, EPDM, and CSM, it can handle 98% sulfuric acid, sodium hypochlorite, ferric chloride, and pH 0- 14 chemicals without corrosion.
2. High Dosing Accuracy: ±0.5%
Our Chonry L Series chemical dosing peristaltic pump delivers flow from 0.1 mL/min to 12,000 mL/min with accuracy of ±0.5%. No slip, no backflow, ideal for pH adjustment and chlorine dosing.
3. Dry Running and Self-Priming
No need to prime. It can run dry indefinitely and self-prime up to 8m, solving the biggest failure point of diaphragm pumps in chemical dosing.
4. No Clogging, No Maintenance
With no valves or seals, it can dose sludge containing up to 60% solids, polymers, and lime slurry without blockage. The hose is the only wearing part, with a service life >1000 hours.
Chemical Dosing Peristaltic Pump vs Diaphragm Dosing Pump
For corrosive and abrasive chemicals, the peristaltic pump reduces maintenance costs by 70%.
How to Select a Chemical Dosing Peristaltic Pump: 5 Key Parameters
1. Flow Rate and Pressure: For chemical dosing, you need low flow but stable pressure. Chonry dosing pumps cover 0.1-12000 mL/min, with pressure up to 0.3 MPa. For higher pressure, use industrial hose pumps up to 15 bar.
2. Hose Material Selection:
Viton (FKM): Best for strong acids, solvents, fuels
EPDM: Best for alkaline, ketones, sodium hypochlorite
NR/NBR: Best for water treatment, general chemicals
Food-Grade Silicone: FDA-certified for pharmaceuticals
3. Dosing Accuracy Control: Choose a stepper motor-driven pump with RS485 MODBUS, 4-20mA, and pulse control for automatic pH/ORP closed-loop dosing.
4. Certifications: For the EU market, CE, RoHS, and ATEX are mandatory. For drinking water, WRAS and FDA are required.
5. OEM Customization: Chonry has provided OEM chemical dosing peristaltic pumps since 2010 with over 30 series and 200+ models, supporting custom flow, motor (12V/24V/110V/220V), and communication protocols.
Top Applications in Europe
Water Treatment: Sodium hypochlorite, PAC, PAM, pH adjustment - Germany, Netherlands, France
Chemical Processing: Acid and alkali transfer, catalyst dosing
Mining and Electroplating: Corrosive chemical metering
Food & Beverage: CIP chemical dosing with FDA hose
Why Chonry Chemical Dosing Peristaltic Pump?
Founded in 2010, Baoding Chuangrui Precision Pump Co., Ltd. (Chonry) is an OEM factory specializing in peristaltic pumps. Our L Series and BT600 series are widely used as chemical dosing peristaltic pumps in 50+ countries.
Factory price, 40% lower than Watson-Marlow and Verderflex
Fast delivery to DE, UK, FR, IT, NL in 5-7 days
Custom OEM available, 24-hour quote
Get a chemical dosing solution: Contact us for a free hose selection guide and datasheet.
FAQ
Q1: What is the accuracy of a chemical dosing peristaltic pump?
A: Chonry dosing pumps achieve ±0.5% accuracy with a stepper motor and flow calibration, suitable for precise pH and chlorine dosing.
Q2: Can it dose sodium hypochlorite?
A: Yes. Use EPDM hose, which resists sodium hypochlorite corrosion. Hose life is over 800 hours at 10% concentration.
Q3: What is the difference between a tube pump and a hose pump for dosing?
A: Tube pumps are for low flow <2L/min in labs. Hose pumps are for industrial chemical dosing with higher pressure and longer hose life.
