24h Instant Remote Technical Assistance
Our professional technical team offers online video guidance for pump installation, parameter adjustment and daily troubleshooting. We supply standard English operation manuals with every shipment.
Recommended for pumping clean water without abrasive particles and chemically non-aggressive liquids. Due to reliability, compactness, cost-effectiveness, and ease of use, they suit domestic and industrial uses: water recirculation in air conditioners/refrigerators, general industrial water supply, automatic water distribution from surge tanks, garden watering, and water suction from tanks/wells (down to 8m depth). Install in enclosed environments or shelter from bad weather.
Component
Pump Body: Cast Iron, with coating and 304SS insert
Pump Support: Cast Iron, with coating and 304SS insert
Motor Housing: Aluminum Alloy
Impeller: Brass
Motor Shaft: 304SS weld, Carbon Steel if request
Operating Condition
Liquid Temperature up to 60 °C
Ambient Temperature up to 40 °C
Total Suction Lift up to 9 m
Function: Self-Priming

Motor
1~220V/50Hz, 110V/60Hz, 220V/60Hz on request
Insulation Grade: Class B
Cooling: External Ventilation
Protection: IP44
Build-in with Thermal Protector
Continuous Work S1
Model Parameters
| Model | Power | Max.Flow | Max.Head | Max.Suct | In/outlet | G.W. | Dimension | |
| kW | HP | |||||||
| 1WZB-35 | 0.37 | 0.5 | 2.1 | 35 | 9 | 1"x 1" | 6.5 | 280x200x242 |
| 1WZB-45 | 0.55 | 0.75 | 2.7 | 45 | 9 | 1"x 1" | 11 | 303x202x360 |
| 1WZB-65 | 0.75 | 1.0 | 3.0 | 55 | 9 | 1"x 1" | 12 | 303x202x360 |
Product Summary
The WZB Domestic Water Pump manufactured by CGO is a high-performance, compact automatic self-priming water pump engineered for residential, agricultural, and light industrial water supply systems. This robust clean water pump is specifically designed to transfer non-aggressive liquids and clean water without abrasive particles. Built with a premium cast iron body featuring an innovative anti-rust 304SS insert, it offers outstanding reliability and cost-effectiveness. Whether you need a dependable electric water transfer pump for home pressure boosting or a durable industrial peripheral pump for factory water distribution, this versatile system delivers a consistent flow, an impressive 9m suction lift, and continuous S1 duty performance for global markets.
Detailed Description
In the competitive global B2B procurement market, finding a balance between cost-efficiency and industrial-grade reliability can be challenging. CGO developed the WZB series domestic water pump to solve this exact dilemma for international distributors and engineering contractors. This clean water pump features a highly compact physical footprint, making it incredibly easy to install in tight residential utility closets, ventilation rooms, or sheltered outdoor enclosures.
Unlike standard economy pumps that suffer from internal corrosion during periods of inactivity, the WZB electric water transfer pump integrates a specialized 304 stainless steel (304SS) plate insert inside both the pump body and the support. This structural reinforcement guards the high-precision brass impeller against jamming or seizing due to rust buildup. Powered by an energy-efficient single-phase motor housed in a lightweight, high-heat-dissipation aluminum alloy casing, the WZB automatic self-priming water pump maintains stable hydraulic pressure even when operating at its peak fluid handling limits.

Key Product Features
Intelligent Self-Priming Action: Removes the need for repeated manual priming, allowing the automatic self-priming water pump to draw water efficiently from depths up to 9 meters.
Anti-Seize & Rust-Proof Design: The dual-coated cast iron body is fitted with a 304SS insert, drastically reducing maintenance downtime and mechanical wear.
Heavy-Duty Brass Impeller: Precision-machined copper alloy impeller resists thermal deformation and guarantees smooth rotational balance.
Continuous S1 Work Rating: Designed with heavy-duty copper windings and an external ventilation cooling fan to support non-stop, 24/7 operations.
Built-In Thermal Protection: Features an integrated auto-reset thermal overload protector that guards the motor against voltage fluctuations and overheating phases.
Engineering Advantages
From a fluid mechanics perspective, peripheral pumps often encounter localized cavitation and scale friction when handling municipal water with high mineral content. To counter this, CGO uses an advanced anti-rust coating process on the cast iron components, coupled with a specialized welding process for the 304SS motor shaft (high-tensile carbon steel shafts are also available upon specific OEM client requests).
The IP44 protection rating ensures that the WZB domestic water pump remains resilient against water splashes and humid ambient environments up to 40 °C. By utilizing Class B insulation standards, the motor maintains thermal stability even when the liquid temperature escalates up to 60 °C. This meticulous engineering ensures that this industrial peripheral pump achieves exceptional volumetric efficiency while minimizing energy loss during high-pressure cycles.
Primary Applications
The adaptable hydraulic performance of the WZB electric water transfer pump makes it a highly profitable asset across multiple commercial sectors:
Surge Tank Water Distribution: Perfect for boosting water pressure from rooftop tanks or gravity-fed cisterns in residential complexes.
HVAC & Equipment Cooling: Serves as a compact industrial peripheral pump for driving clean water recirculation loops inside commercial air conditioning systems and chillers.
Agricultural Irrigation: Ideal for small-scale farm watering, localized greenhouse misting, and nursery irrigation lines.
Deep Cistern Suction: Smoothly draws water from wells, underground storage units, and rivers from a vertical lift of 8 to 9 meters.
Commercial Value
For international wholesalers, hardware brands, and sourcing agents, partnering with CGO for the WZB series ensures a clear competitive edge. By importing a domestic water pump that integrates high-end materials like brass impellers and stainless steel inserts at a cost-effective price point, you can dramatically lower your post-sale warranty claims and replacement expenses.
CGO provides flexible multi-voltage motor configurations (110V/220V, 50/60Hz) to help you seamlessly adapt to different regional power grids across North America, South America, and Southeast Asia. Our stable production capacity, customizable OEM packaging, and strict compliance with global quality standards ensure that your inventory remains highly profitable with zero supply chain disruption.
FAQ
Q1: Can this clean water pump handle slightly muddy river water?
No. The WZB clean water pump is strictly designed for pumping clean water without abrasive particles or chemically aggressive liquids. For water sources with minimal silt, CGO highly recommends installing a fine mesh pre-filter on the suction inlet line to protect the impeller against abrasion.
Q2: How does the 304SS insert protect the automatic self-priming water pump?
Standard cast iron pumps often suffer from internal rust when left unused for a few weeks, causing the impeller to lock up upon restarting. The 304SS insert used by CGO ensures the area surrounding the brass impeller remains rust-free, guaranteeing a smooth startup every time.
Q3: Is this electric water transfer pump suitable for outdoor installation?
The WZB pump features an IP44 protection rating, which resists minor splashes. However, to maximize its working lifespan and protect the electronics from harsh weather, CGO advises installing the unit in an enclosed environment or under a protective shelter.
We provide full lifecycle after-sales support for all global pump partners, including remote technical guidance, fault troubleshooting, fast spare parts supply and standard 1-year factory warranty.
Our professional technical team offers online video guidance for pump installation, parameter adjustment and daily troubleshooting. We supply standard English operation manuals with every shipment.
For bulk municipal, agricultural and industrial engineering orders, we can arrange experienced technicians to deliver on-site testing and commissioning service.
We stock complete spare parts for all pump series. Once quality defects are confirmed, replacement components will be shipped rapidly to minimize your equipment downtime.
All our pumps enjoy a 1-year warranty against manufacturing defects. Free spare parts will be provided for quality issues within the warranty period. Damage caused by improper operation or human error is not covered.