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Welcome to Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd. As a professional manufacturer with over a decade of experience in water treatment solutions, we are proud to introduce our Automatic Liquid Chlorine Dosing System for Swimming Pool Water Disinfection. This advanced system ensures precise, safe, and efficient chlorine dosing, helping pool operators maintain optimal water quality with minimal manual intervention. Backed by our certified production line and extensive export to markets across North America, South America, Europe, Africa, and Asia, our dosing system delivers consistent performance that meets global standards.
Key Features & Technical Benefits
Precise Automatic Control: Equipped with a PID feedback loop and digital controller, the system continuously monitors residual chlorine levels and adjusts the dosing rate in real time. This eliminates fluctuations and ensures water disinfection is always within the desired range (0.5–3.0 ppm).
High-Quality Liquid Chlorine Pump: Uses a durable diaphragm metering pump with PVDF/PVC wetted parts, resistant to corrosion from liquid chlorine (sodium hypochlorite or calcium hypochlorite). Flow rates are adjustable from 0 to 20 L/h, suitable for pools from small residential to large commercial.
User-Friendly Interface: A clear LCD display shows real-time dosing rate, total flow, and alarm status. Simple keypad allows operators to set target chlorine concentration and dosing schedules. The system also supports remote monitoring via optional communication module (RS485/Modbus).
Safety Protections: Built-in low-level alarm for chemical tank, over-pressure protection, and leak detection. The system automatically shuts down in case of abnormal conditions, preventing accidents and chemical waste.
Energy Efficient & Low Maintenance: The dosing pump operates on demand, reducing power consumption. Self-priming and anti-backflow design minimize maintenance. The injection check valve ensures stable dosing without clogging.
Flexible Installation: Compact wall-mounted design saves space. Includes all necessary fittings, suction tube, injection valve, and foot filter. Can be integrated with existing pool filtration systems.
Technical Specifications
| Parameter | Value |
| Model | ZLN-CDS-20, ZLN-CDS-40 (customizable) |
| Max Flow Rate | 20 L/h (standard), up to 60 L/h optional |
| Dosing Accuracy | ±2% of set point |
| Power Supply | 110V/220V AC, 50/60Hz (selectable) |
| Max Pressure | 3 bar (43 psi) |
| Operating Temperature | 5°C – 55°C (41°F – 131°F) |
| Wetted Materials | PVC, PVDF, PTFE, EPDM |
| Control Mode | Automatic (PID), Manual override available |
| Display | LCD, with backlight |
| Protection Class | IP54 (indoor/sheltered installation) |
Customer Benefits
Eliminates the need for manual chlorine testing and dosing, saving labor time and reducing chemical consumption by up to 30%.
Maintains consistent water disinfection, preventing algae growth and bacteria contamination, thus ensuring swimmer safety.
Low total cost of ownership due to durable components and minimal maintenance requirements.
Flexible customization: flow range, power plug, communication protocol, and tank size can be tailored to your project.
Easy integration with existing pool automation systems – compatible with most brands.
Why Choose ZLN?
Tianjin ZhuoLiNeng Technology Co., Ltd. is a dedicated manufacturer with years of expertise in water treatment dosing systems. We hold certification for quality management and our products are exported to over 30 countries including the USA, Germany, Australia, Brazil, and Saudi Arabia. Our team of experienced engineers provides comprehensive technical support, from pre-sales consultation to after-sales service. With a strong supply chain and efficient production, we ensure fast delivery from Tianjin Port. Whether you are a pool contractor, a facility manager, or a distributor, our automatic chlorine dosing system offers the reliability and performance you need. Contact us today to get a quote or request a sample – we are ready to customize a solution for your pool water disinfection needs.
Frequently Asked Questions
Q: Can this system handle both sodium hypochlorite and calcium hypochlorite?
A: Yes, the system is designed for liquid chlorine solutions, including sodium hypochlorite (common bleach) and calcium hypochlorite solutions. The wetted materials are corrosion-resistant to these chemicals. However, for calcium hypochlorite, we recommend periodic cleaning of the injection line to prevent solid buildup.Q: What is the recommended residual chlorine range for swimming pools?
A: Typically, the ideal free chlorine level is between 1.0 and 3.0 ppm (mg/L). Our system can be set to maintain any target concentration between 0.5 and 5.0 ppm with high accuracy.Q: How often does the dosing pump need maintenance?
A: The diaphragm pump is low-maintenance. We recommend checking the pump head and valves every 3 months, and replacing the diaphragm once a year under normal operation. A maintenance kit is available upon request.Q: Can this system be integrated with an existing pool automation system (e.g., SCADA)?
A: Yes, our standard model offers RS485/Modbus communication. We can also integrate other protocols (e.g., 4-20mA, 0-10V) based on your needs. Please specify when ordering.Q: What is the maximum pool size this system is suitable for?
A: The standard 20 L/h model is suitable for pools up to about 500 m³. For larger pools (e.g., commercial or public pools), we offer higher flow rate options up to 60 L/h. Contact our team for a sizing calculation.Q: Is installation complicated? Can I do it myself?
A: The system is designed for easy wall-mount installation. A basic plumbing and electrical knowledge is required. We provide a detailed installation manual and video guide. Alternatively, our technical team can assist remotely. If you need, we can arrange on-site training for your staff.Q: Do you offer warranty and spare parts?
A: Yes, we provide a standard 12-month warranty covering manufacturing defects. Spare parts such as diaphragms, valves, and circuit boards are available for purchase. Extended warranty options are negotiable for bulk orders.Q: How long is the delivery time?
A: For standard models, the lead time is typically 15–25 working days after payment confirmation. Customized orders may take 30–40 days. We ship from Tianjin Port via sea, air, or express courier according to your preference.
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