Changsha Zhonglian Pump Industry Co., Ltd.

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Having 26 series -312 varieties - over 1000 pump models

Focused on water pump research and development manufacturing for 36 years

Free training for operation and maintenance personnel/free installation guidance/free provision of installation drawings

Self-balancing multistage pump

Multistage pump

Coal Mine Safety Certified Multi-stage Pump

Vertical multistage pump

Integrated pump station

Vacuum pump

Fire pump

Constant-pressure water supply equipment

Other pumps

Genuine accessories

YG Vertical Explosion-Proof Pipeline Centrifugal Oil Pump

YG Vertical Explosion-Proof Pipeline Centrifugal Oil Pump

Traffic: 1.1–2000 m³/h

Head: 7-153m

Power: 0.18-2500kw

Efficiency: 19%–84%

Pump weight: 17-2200kg

Cavitation margin: 2.0–6.0 m

Price: 0.081–21,500

The YG explosion-proof pipeline oil pump is a vertical, single-stage, single-suction centrifugal oil pump designed as a pipeline-type pump. It is ingeniously developed by Lianlian Pump Industry, a pipeline pump manufacturer, based on conventional pipeline centrifugal pumps. Furthermore, depending on factors such as operating temperature and medium properties, this series has been derived from the ISG centrifugal pump to create products specifically suited for conveying oily media. This product series boasts advantages such as high efficiency, energy savings, low noise, and reliable performance. It is ideal for transporting media that are free of solid particles, such as gasoline, kerosene, and diesel fuel.

Hotline:

+86 0731-88632200

classification：

Pipeline pump

keyword：

Horizontal Single-Stage Fire Pump

Product consultation

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Product overview Product parameters Why choose us? Frequently Asked Questions

Product Overview

　　The YG-type explosion-proof pipeline oil pump is a vertical, single-stage, single-suction centrifugal oil pump designed as a pipeline pump. It is ingeniously developed by Lianlian Pump Industry based on conventional pipeline pumps. Furthermore, depending on factors such as operating temperature and medium properties, this series has been derived from the ISG-type centrifugal pump to create products specifically suited for conveying oily media. This product series boasts advantages including high efficiency, energy savings, low noise levels, and reliable performance. It complies with the standards set forth by the Ministry of Machinery of China, JB/T5305 8-93. The products are designed and manufactured according to the international ISO 2858 standard. All models in this series are equipped with nationally standardized explosion-proof motors, featuring an explosion-proof rating of DIIBT4 and a protection rating of IP54. The impeller is made of high-quality brass casting and passed the national unified inspection for pipeline pump products conducted by the Ministry of Machine Industry in 1993.

Product Parameters

Technical Parameters and Model Significance of YG Vertical Explosion-Proof Pipeline Centrifugal Oil Pumps:

　　1. The suction pressure of the explosion-proof pipeline pump shall be less than 1.0 MPa, or the maximum working pressure of the pump system shall be less than 1.6 MPa—i.e., the sum of the pump’s suction inlet pressure and its head shall be less than 1.6 MPa. The static test pressure for the pump is 2.5 MPa. When placing an order, please specify the system’s working pressure. If the pump system’s working pressure exceeds 1.6 MPa, this should be explicitly stated at the time of ordering so that cast steel materials can be used for the pump’s flow passages and connecting parts during manufacturing.

　　2. Ambient temperature < 40 ℃, relative humidity < 95%.

　　3. The volume content of solid particles in the conveyed medium shall not exceed 0.1% per unit volume, and the particle size shall be greater than 0.2 mm.

　　Note: If the medium contains fine particles, please specify this when placing your order so that the manufacturer can equip the pump with a wear-resistant mechanical seal.

Meaning of the YG Explosion-Proof Pipeline Pump Model

Application of YG Vertical Explosion-Proof Pipeline Centrifugal Oil Pumps:

　　1. The YG explosion-proof pipeline pump is designed for conveying petroleum products such as gasoline, kerosene, and diesel fuel, with a medium temperature range of -20℃ to +120℃.

　　2. This explosion-proof pipeline oil pump is primarily used for boosting pressure in pipelines and for long-distance transportation of oils such as gasoline, kerosene, diesel, and aviation fuel. It can also convey other non-corrosive liquids. It is suitable for use in oil depots, gas stations, chemical plants, mines, petrochemical facilities, and various enterprises and institutions.

Structural Diagram and Structural Features of the YG Vertical Explosion-Proof Pipeline Centrifugal Oil Pump:

Structural Diagram of the YG Vertical Pipeline Pump

　　1. The YG-type explosion-proof pipeline oil pump features a vertical design with identical inlet and outlet diameters located on the same centerline. It can be installed in pipelines just like a valve. The pump boasts a compact and aesthetically pleasing appearance, occupies a small footprint, and requires low initial construction investment. With the addition of a protective cover, it can even be used outdoors.

　　2. The impeller is directly mounted on the motor’s extended shaft, resulting in a short axial dimension and a compact structure. The pump and motor bearings are arranged reasonably, effectively balancing the radial and axial loads generated during pump operation, thereby ensuring smooth pump operation with very low vibration and noise levels.

　　3. The shaft seal employs either a mechanical seal or a mechanical seal combination, featuring imported titanium alloy sealing rings, medium-sized high-temperature-resistant mechanical seals, and seals made of hard alloy materials with excellent wear resistance, thereby effectively extending the service life of the mechanical seal.

　　4. Easy to install and maintain—no need to disassemble the piping system; simply remove the pump coupling base nut to extract the entire rotor assembly.

　　5. According to usage requirements—specifically, the desired flow rate and head—the pumps can be operated in series or parallel configurations.

　　6. The pump can be installed vertically or horizontally according to the requirements of the piping layout.

Start-up and Shutdown of Explosion-Proof Pipeline Oil Pumps:

　　Pre-start preparations:

　　1. Verify that the motor rotation direction is correct—when viewed from the top of the motor toward the pump, the rotation should be clockwise. The test duration should be brief to avoid dry friction and wear on the mechanical seal.

　　2. Open the exhaust valve to allow the liquid to fill the entire pump body. Once full, close the exhaust valve.

　　3. Check whether each part is functioning normally.

　　4. Use to turn the pump manually to allow lubricant to enter the mechanical seal faces.

　　5. For high-temperature applications, preheating is required first, with a heating rate of 50°C per hour, to ensure uniform heating throughout all components.

　　Start:

　　1. Fully open the inlet valve.

　　2. Close the discharge pipeline valve.

　　3. Start the motor and observe whether the pump is operating normally.

　　4. Adjust the opening of the outlet valve to the desired operating condition. If the user has installed a flow meter or pressure gauge at the pump outlet, adjust the outlet valve opening so that the pump operates at the rated point specified in the performance parameter table. If the user has not installed a flow meter or pressure gauge at the pump outlet, adjust the outlet valve opening and measure the motor current of the pump. Ensure that the motor operates within its rated current range; otherwise, the pump may run under overload conditions (i.e., with excessive current), potentially causing the motor to burn out. The appropriate opening size of the adjusted outlet valve depends on the pipeline operating conditions.

　　5. Check the shaft seal for leaks; under normal conditions, mechanical seal leakage should be less than 3 drops per minute.

　　6. Check that the temperature at the motor and bearing locations is ≤70℃.

　　Parking:

　　1. For high-temperature models, first cool down the temperature at a rate of less than 10°C per minute. Only after reducing the temperature below 80°C can you stop the machine.

　　2. Close the discharge pipeline valve.

　　3. Stop the motor.

　　4. Close the inlet valve.

　　5. If the pump is to be parked for an extended period, the liquid inside the pump should be drained completely.

Maintenance of explosion-proof pipeline oil pumps:

　　　1. In-operation maintenance:

　　(1) The inlet pipeline must be completely filled with liquid; pumps are prohibited from operating for extended periods under cavitation conditions.

　　(2) Regularly check the motor current value; it must not exceed the motor’s rated current.

　　(3) After the pump has been in long-term operation, if mechanical wear causes increased noise and vibration in the unit, the pump should be stopped for inspection. If necessary, worn parts and bearings can be replaced. The typical overhaul period for the unit is one year.

　　2. Mechanical Seal Maintenance

　　(1) The lubrication for mechanical seals shall be clean and free of solid particles.

　　(2) It is strictly prohibited to operate mechanical seals under dry-running conditions.

　　(3) Before starting, the pump (or motor) should be turned by hand several times to prevent sudden starting from causing the graphite ring to break or get damaged.

　　(4) The allowable leakage rate for the seal is 3 drops per minute. Otherwise, an inspection should be conducted.

Friendly reminder: For performance parameters, please refer directly to the pump selection page.

Why choose us?

Changsha Zhonghlian Pump Industry Co., Ltd. was founded in 1989 and was independently established after the restructuring of Changsha Water Pump Factory. It is a comprehensive national high-tech enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Equity Exchange on December 31, 2019, with the abbreviation "Zhonghlian Pump Industry" and the equity code: 600275HN. It is currently a key backbone enterprise in China's centrifugal pump industry and one of the major professional manufacturers of multi-stage pumps in the country. The headquarters is located in Changsha City, Hunan Province, a historical and cultural city in China.

41000 m²

Square meters of land area

100 %

100% factory pass rate

41000 m²

Square meters of land area

100 %

100% factory pass rate

What is your typical delivery time?

Models in stock can be shipped the next day at the latest. All others are custom-made, with lead times generally ranging from 7 to 90 days depending on the product size and project specifics. Please contact our sales manager for details: 0731-88632200 。

Do you have centrifugal pumps in stock?

Centrifugal pumps come in numerous models and configurations. Except for a small number of high-volume, standard models that are in stock, the vast majority are not stocked and are customized products. We need to select a pump based on your site's flow rate, head, media temperature, pH value, and installation conditions, etc., to determine the pump model and configuration before we can submit an order to the factory for production.

What information should I provide when requesting a quote?

Generally, to obtain an accurate quotation, we recommend providing us with the following information: pump flow rate, head, on-site operating voltage and frequency, temperature, pH value, and solid particle content of the fluid being conveyed, and on-site installation conditions (horizontal or vertical installation), etc.

If you are not sure, don't worry, our business managers will assist you in determining this.

What products do you mainly produce?

Zhonglian Pump Industry manufactures various large industrial centrifugal pumps. Main products include: self-balancing multi-stage pumps, multi-stage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condensate pumps, etc.

Could you help me with the selection?

Certainly! If the water pump model is not selected accurately, there will be big problems. If you choose a smaller one, it won't meet your needs; if you choose a larger one, it will waste electricity and fuel, increasing your costs.

Why is it so slow to get a price quote?

Because centrifugal pumps are non-standard customized products with many models, the price range is also very large. Even for the same model, the price difference is also very large due to different materials and configurations. Taking the most common water pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clarify the relevant information to give you an accurate price. Normally, if you provide relatively comprehensive information, we can quote within 5 minutes.

ISWH Horizontal Explosion-Proof Stainless Steel Pipeline Centrifugal Pump

ISG Vertical Single-Stage Single-Suction Pipeline Centrifugal Pump

ISWH Horizontal Explosion-Proof Stainless Steel Pipeline Centrifugal Pump

ISG Vertical Single-Stage Single-Suction Pipeline Centrifugal Pump

+86 0731-88632200

Export Trade/Technical Support:

+86 153-4831-2290

Head Office Email:

zoomlian@yeah.net

No. 210, Huanbao Zhong Road, Yuhua District, Changsha City, Hunan Province, Leowoju Wisdom Valley Building B, 8th Floor

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