Key Features & Advantages
- Stainless Steel Shaft & Housing: The core construction utilizes corrosion-resistant stainless steel, providing exceptional longevity and reliability when handling clean water, mild chemicals, or in environments prone to rust. This makes it suitable for hygienic and slightly corrosive applications where standard iron or aluminum pumps would fail.
- National Standard Motor: Powered by high-efficiency motors that comply with national standards, delivering reliable and consistent performance.
- Premium Brand Bearings: Equipped with high-grade bearings to ensure smooth, low-friction, and quiet operation, extending the pump’s service life.
- Dual O-Ring Seals: Features a double O-ring sealing configuration at critical points, significantly enhancing the waterproof integrity and preventing leakage, which is crucial for submersible reliability.
- Silicon Carbide Mechanical Seal: In addition to O-rings, key models incorporate wear-resistant silicon carbide (SiC) mechanical seals. This provides superior protection against abrasive particles and ensures long-term sealing performance in challenging fluids.
- Full Head, Wide Voltage Design: The hallmark of DONGTAO’s advanced pump technology. The pump operates stably at any point from zero to its maximum rated head. It is also designed to tolerate voltage fluctuations:
- Single-Phase (QDX) Models: Operate normally from 160V to 230V.
- Three-Phase (QX) Models: Operate normally from 330V to 380V.
Model Number Instruction
Understanding the model code helps identify the pump’s specifications:
- Q: Submersible Pump (Three-phase)
- QD: Submersible Pump (Single-phase)
- X: Small / Clean Water Type
- G: Denotes “Stainless Steel” construction (appears in model suffix, e.g., QDX3-16-0.37G)
- First Number: Rated Flow (m³/h)
- Second Number: Rated Head (m)
- Third Number: Motor Power (kW)
Example: QDX3-16-0.37 G= Single-phase stainless steel submersible pump with 3 m³/h flow, 16m head, and 0.37kW power.
Technical Specifications (Partial List)
Single-Phase Stainless Steel (QDX G) Models
| No. | Model | Voltage (V) | Rated Flow (m³/h) | Rated Head (m) | Power (kW) | Pipe Dia. (mm) |
|---|---|---|---|---|---|---|
| 1 | QDX3-16-0.37 G | 220 | 3 | 16 | 0.37 | 25 |
| 2 | QDX3-20-0.55 G | 220 | 3 | 20 | 0.55 | 25 |
| 3 | QDX15-7-0.55 G | 220 | 15 | 7 | 0.55 | 50 |
| 4 | QDX3-27-0.65 G | 220 | 3 | 27 | 0.65 | 25 |
| 5 | QDX10-12-0.65 G | 220 | 10 | 12 | 0.65 | 50 |
| 6 | QDX3-30-0.75 G | 220 | 3 | 30 | 0.75 | 25 |
| 7 | QDX7-18-0.75 G | 220 | 7 | 18 | 0.75 | 40 |
| 8 | QDX10-16-0.75 G | 220 | 10 | 16 | 0.75 | 50 |
| 9 | QDX15-10-0.75 G | 220 | 15 | 10 | 0.75 | 65 |
| … | … | … | … | … | … | … |
| 27 | QDX100-6-3 G | 220 | 100 | 6 | 3 | 150 |
Three-Phase Stainless Steel (QX G) Models
| No. | Model | Voltage (V) | Rated Flow (m³/h) | Rated Head (m) | Power (kW) | Pipe Dia. (mm) |
|---|---|---|---|---|---|---|
| 1 | QX40-9-1.5 G1 | 380 | 40 | 9 | 1.5 | 80 |
| 2 | QX40-13-2.2 G | 380 | 40 | 13 | 2.2 | 80 |
| 3 | QX65-8-2.2 G | 380 | 65 | 8 | 2.2 | 100 |
| 4 | QX100-6-3 G | 380 | 100 | 6 | 3 | 150 |
Applications
- Potable water supply and pressure boosting systems.
- Transfer of mild chemical solutions, fertilizers, or industrial process liquids.
- Food and beverage processing, where hygiene and corrosion resistance are critical.
- Pharmaceutical and cosmetic industry fluid handling.
- Irrigation with treated water or mild nutrient solutions.
- Water features, fountains, and aquariums requiring clean, rust-free operation.
Why Choose DONGTAO Q(D)X Stainless Steel Series?
- Superior Corrosion Resistance: Stainless steel construction ensures longevity and purity in handling clean or mildly aggressive fluids.
- Hybrid Sealing Security: The combination of dual O-rings and silicon carbide seals provides unmatched leakage protection.
- Operational Versatility: Full head and wide voltage capability allow for flexible installation and reliable performance in variable conditions.
- Hygienic & Durable: Ideal for applications where product purity and equipment durability are non-negotiable.
- Trusted Quality: Built with national standard motors and premium components for dependable, long-term service.
Contact Us for Selection & Quotation
For the complete stainless steel pump catalog, detailed specifications for a specific model, or assistance in selecting the right pump for your application (considering fluid type, flow, head, and power supply), please contact our technical sales team.
