Key Features & Advantages
- Stainless Steel Shaft & Housing: The pump’s core wet-end components are made of corrosion-resistant stainless steel. This provides exceptional longevity and structural integrity when pumping chemically aggressive sewage, industrial wastewater, or saline fluids, making it ideal for food processing, chemical plants, marine applications, and municipal treatment.
- National Standard Motor: Powered by reliable and efficient motors compliant with national standards, designed for continuous duty in challenging environments.
- Premium Brand Bearings: Incorporates high-grade bearings to ensure smooth, low-vibration operation and extended service life, even under the stress of pumping solids-laden, corrosive fluids.
- Silicon Carbide (SiC) Mechanical Seals: Employs ultra-hard, corrosion-resistant silicon carbide seals. This is critical for sewage applications, as SiC provides outstanding resistance to abrasion from grit and sand, as well as chemical attack from aggressive effluents, dramatically improving seal life and preventing leakage.
- Dual O-Ring Seals: Features a double O-ring sealing configuration at critical junctions, providing an additional, robust barrier against leakage and enhancing the overall waterproof integrity of the pump.
- Full Head, Wide Voltage Design: Incorporates DONGTAO’s signature performance technology. The pump operates stably across its entire performance curve. It is also engineered to tolerate voltage fluctuations:
- Single-Phase (WQD) Models: Operate normally from 160V to 230V.
- Three-Phase (WQ) Models: Operate normally from 330V to 380V.
Model Number Instruction
The model code specifies the pump’s type, material, and key parameters:
- WQ: Submersible Sewage Pump (Three-phase)
- WQD: Submersible Sewage Pump (Single-phase)
- G: Denotes “Stainless Steel” construction (appears in model suffix, e.g., WQD10-9-0.55 G)
- First Number(s): Rated Flow (m³/h)
- Second Number(s): Rated Head (m)
- Third Number: Motor Power (kW)
Example: WQD10-9-0.55 G= Single-phase stainless steel sewage pump with 10 m³/h flow, 9m head, and 0.55kW power.
Technical Specifications (Partial List)
Single-Phase Stainless Steel (WQD G) Models
| No. | Model | Voltage (V) | Rated Flow (m³/h) | Rated Head (m) | Power (kW) | Pipe Dia. (mm) |
|---|---|---|---|---|---|---|
| 1 | WQD10-9-0.55 G | 220 | 10 | 9 | 0.55 | 50 |
| 2 | WQD10-11-0.75 | 220 | 10 | 11 | 0.75 | 50 |
| 3 | WQD10-15-1.1 G | 220 | 10 | 15 | 1.1 | 50 |
| 4 | WQD40-9-1.5 GB | 220 | 40 | 9 | 1.1 | 80 |
| 5 | WQD15-15-1.5 G | 220 | 15 | 15 | 1.5 | 50 |
| 6 | WQD40-12-2.2 G | 220 | 40 | 12 | 2.2 | 80 |
| 7 | WQD65-7-2.2 G | 220 | 65 | 7 | 2.2 | 100 |
| 8 | WQD40-15-3 G | 220 | 40 | 15 | 3 | 80 |
| 9 | WQD65-10-3 G | 220 | 65 | 10 | 3 | 100 |
| 10 | WQD100-6-3 G | 220 | 100 | 6 | 3 | 150 |
Three-Phase Stainless Steel (WQ G) Models
| No. | Model | Voltage (V) | Rated Flow (m³/h) | Rated Head (m) | Power (kW) | Pipe Dia. (mm) |
|---|---|---|---|---|---|---|
| 1 | WQ10-9-0.55 GB | 380 | 10 | 9 | 0.75 | 50 |
| 2 | WQ10-11-0.75 GB | 380 | 10 | 11 | 1.1 | 50 |
| 3 | WQ10-15-1.1 GB | 380 | 10 | 15 | 1.5 | 50 |
| 4 | WQ40-9-1.5 GB | 380 | 40 | 9 | 1.5 | 80 |
| 5 | WQ15-15-1.5 GB | 380 | 15 | 15 | 2.2 | 50 |
| 6 | WQ40-13-2.2 G | 380 | 40 | 13 | 2.2 | 80 |
| 7 | WQ65-8-2.2 G | 380 | 65 | 8 | 2.2 | 100 |
| 8 | WQ100-6-3 G | 380 | 100 | 6 | 3 | 150 |
Applications
- Handling corrosive industrial wastewater from chemical, pharmaceutical, or metal processing plants.
- Sewage and effluent transfer in marine environments, ships, and offshore platforms (where saltwater is present).
- Food and beverage processing wastewater, which can be acidic or caustic.
- Municipal wastewater treatment plants, especially in stages with aggressive chemicals or saline infiltration.
- Drainage in harsh environments like mines, quarries, or construction sites with contaminated water.
Why Choose DONGTAO WQ(D) Stainless Steel Sewage Pump Series?
- Maximum Corrosion Resistance: Stainless steel construction is essential for longevity when handling aggressive sewage and industrial effluents.
- Superior Seal Package: The combination of Silicon Carbide mechanical seals and dual O-rings provides a sealing solution specifically engineered for the abrasive and corrosive nature of tough wastewater.
- Built for Severe Duty: Every component, from the housing to the seals, is selected to withstand the punishing conditions of corrosive fluid handling.
- Adaptable & Reliable: Full-head and wide-voltage capability ensure consistent performance despite varying system backpressures and unstable power sources common in industrial settings.
- Professional Grade Solution: Offers the material science and engineering necessary where standard sewage pumps would have a drastically shortened lifespan.
Contact Us for Corrosive & Industrial Wastewater Expertise
Selecting the correct pump for corrosive sewage is critical. Contact our technical sales team for the complete stainless steel sewage pump catalog, detailed chemical compatibility guidance, and expert assistance in model selection based on your specific fluid characteristics, solids content, flow, and head requirements.
