▼Product introduction

The BZ direct-drive self-priming pump is a compact centrifugal pump with its motor directly connected to the pump body, eliminating the need for an additional base. It boasts excellent self-priming capability, automatically venting air from the inlet pipeline and starting without priming. This pump type offers stable operation and easy maintenance, making it widely applicable for clean water transportation in agricultural irrigation, municipal water supply, and industrial processes.

▼Application environment

Suitable for industrial and urban water supply and drainage, building pressurization, garden sprinkler irrigation, hot and cold water circulation pressurization and equipment matching.

▼Product features and advantages

1. Powerful Self-Priming: Only a small amount of pre-filled priming fluid is needed for initial startup; no repriming is required after the first start, simplifying operation.

2. Compact and Durable: Constructed from high-quality cast iron or stainless steel, it is corrosion-resistant and wear-resistant, suitable for harsh working conditions, and has a long service life.

3. Easy Maintenance: Simple operation and disassembly reduce downtime and maintenance costs.

4. Wide Application: Capable of conveying clean water, sewage, mildly acidic or alkaline liquids, and slurries with a solid content ≤30%. Medium temperature range is -10℃ to 80℃ (special models up to 120℃), suitable for agricultural irrigation, building water supply and drainage, industrial circulation, and other fields.

5. High Efficiency and Energy Saving: Optimized hydraulic design ensures stable operation, low energy consumption, and high energy efficiency. Compared to similar products, it can save 15-20% on energy consumption, reducing operating costs.

▼Working principle

When the pump starts, the liquid stored in the pump is thrown upwards by the impeller, carrying air with it. The liquid flows back to the working chamber through the gas-liquid separation chamber, and the gas is discharged outside the pump, creating a certain degree of vacuum inside the pump and achieving self-priming.

▼Shopping and maintenance suggestions

Key Selection Points: Choose the model based on your flow requirements, paying attention to the pump body material and motor protection rating (IP54 or higher recommended).

Common Faults: No water output may be due to insufficient pump priming, air leaks in the pipeline, or impeller blockage. For initial use, fill the pump with priming water.

Maintenance Schedule: Replenish bearings with grease every six months, inspect the mechanical seal annually, and drain any remaining water to prevent rust if the pump is to be out of service for an extended period.

▼Precautions for use

1. When installing the water pump, do not use overly soft rubber hoses for the inlet pipe to avoid flattening. Use rigid plastic or iron pipes, extending vertically at least 50cm underwater and at least 30cm above the bottom to prevent the pump from sucking up mud and sand.

2. Before installation, connect the power supply and test the pump. The rotation should be clockwise when viewed from the fan blade end (reverse rotation is strictly prohibited).

3. All connections in the inlet pipe must be sealed, and bends should be minimized; otherwise, water will not be drawn in.

4. For first-time use, fill the pump body with clean water to purge air. When starting, slightly close the outlet valve. After water flows out, adjust the valve to the desired flow rate.

5. In freezing weather, drain the water from the pump body to prevent it from freezing and cracking.

Strong capabilities / 20 years dedicated to the research and development of pump technology. With a 12,000 square meter production workshop, a production team and technical staff of over 100 people, and 68 professional processing equipment, we possess strong capabilities and have earned consistent recognition from customers and the industry. We have established an international standard production management system and strictly adhere to its production standards, achieving an annual pump manufacturing capacity of over 100,000 units. We have obtained ISO9001 quality system certification and CE certification.

Professional expertise/Continuous innovation, developing new types of pump products. The company has a dedicated pump research institute specializing in the research and development of new products and technologies, and boasts a team of nearly ten engineers with over 15 years of experience in the pump industry. We innovate and develop products based on customer use cases, continuously improving product efficiency, saving energy, and meeting the requirements of customers in various industries. We provide you with a comprehensive range of high-quality products, a wide range of product applications, and a complete and professional service system.

Attentive service/one-on-one service, providing professional technical guidance. Pre-sales: Professional engineers provide one-on-one service, offering multiple pump product configuration options based on actual site conditions; During sales: Providing guidance on product installation and maintenance methods; After-sales: Providing repair and maintenance services, and guaranteeing the long-term and timely supply of spare parts.

Guangzhou Zhongkai Pump Industry Co., Ltd. is located in Guangzhou, China. The company is a professional manufacturer of pumps, with many years of production history, excellent management experience, stable product quality, a wide variety of products, and complete specifications.  Its main products include ten major series and over 600 specifications, and it was among the first to obtain ISO9001 international quality assurance system certification. The company's main products include various centrifugal pumps, slurry pumps, mud pumps, sewage pumps, pipeline pumps, self-priming pumps, diaphragm pumps, electric high-temperature reciprocating pumps, magnetic pumps, chemical pumps, gear pumps, thick slurry pumps, vortex pumps, water supply and drainage equipment, electrical control cabinets, etc. These products are widely used in chemical, pharmaceutical, environmental protection, and other industries, and are highly praised and trusted by a wide range of users.