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ZPB-type air-water dual-purpose jet pump



classification:

Other pumps

keyword:

Horizontal Single-Stage Fire Pump

Product overview Product parameters Why choose us? Frequently Asked Questions

Product Overview

ZPB-type air-water dual-purpose jet pump assembly

       This pump assembly is primarily designed for large- and medium-sized pumps. After removing the foot valve, it enables the pump to self-prime and draw water without a foot valve, thereby reducing labor intensity and achieving significant energy savings—typically ranging from 5% to 27% per ton of water pumped.

       1. This pump is classified into Type I (manual control type) and Type II (solenoid valve automatic control type) based on its control method.

       2. Special materials can be used upon user request.

       The ZPB-type air-water dual-purpose jet pump assembly consists of a PB-type jet pump, valves, a vacuum gauge, pipelines, and pipe fittings.

       After removing the foot valve from the pump suction pipe, energy savings can range from 5% to 30% compared to the situation with a foot valve installed. Depending on the working water pressure, this device is available in three models: low-pressure—D (≤1.6 MPa), medium-pressure—Z (≤4 MPa), and high-pressure—G (≤10 MPa). The compressed air or steam pressure ranges from 0.2 to 0.5 MPa.

 Air-water dual-purpose jet pump

Product Parameters

ZPB Type Gas-Water Dual-Use Ejector Pump Model Specifications

       They are classified into different specifications according to the varying pressures of the working medium.

Working medium

ZPBD type

ZPBZ type ZPBG type
Work pressure water Kgf/cm

2-16

16-40 40-100
Pressure gas (steam) Kgf/cm

2-5

2-5 2-5
Control medium valve model

J41-16

J43(53)H-40

J43(53)H-100

Meaning of the Model Designation for ZPB-Type Gas-Water Dual-Use Ejector Pump

       For example: ZPB (DZG)

       Z--------- Assembly

       PB-------Jet Pump

       DZG-----Working medium pressure: Low pressure 2–16 kgf/cm²

       Z Medium Pressure 16-40 kgf/cm²

       G High pressure 40-100 kgf/cm²

Structural Features and Installation Precautions for ZPB-Type Gas-Water Dual-Use Ejector Pumps

Schematic diagram of a jet pump

       Installation and Use:

       Based on the pump installation site, the installation types can be categorized into single-pump and multi-pump operation configurations.

       For the installation of a single pump, each jet pump draws and lifts water exclusively for its own pump.

       Multiple pumps are installed as shown in the figure. In this installation configuration, several pumps share multiple jet pumps. When used in the main pump room underground in coal mines, the system employs multiple working media—namely, high-pressure water, compressed air, and a backup water source—as power sources. The jet pumps are connected in parallel and serve as mutual backups. As a result, any one of the jet pumps can start any one of the pumps during operation, enabling the complete elimination of bottom valves from the central pump room underground. Therefore, this installation configuration is referred to as an upper-water supply system featuring multiple power sources and multiple jet pumps connected in parallel with mutual backup capabilities.

Schematic diagram of multiple jet pumps operating in parallel

       Precautions:

       1. When opening small high-pressure valves: If a globe valve is used, be careful to gradually increase the valve opening to prevent insufficient water flow due to starting too slowly, which could disable the jet pump. If a plug valve is used, pay attention to opening it slowly to avoid hydraulic shock caused by sudden opening, which could damage the jet pump.

       2. After the bottom valve of the pump is removed, the air and water from the pump’s balance chamber should be directed into the suction pipe. At the same time, it is essential that the packing seals on both sides of the pump are airtight to prevent air from entering the pump body during jetting operations and thereby compromising the pump’s suction performance.

 

  For performance parameters, please go directly to Pump Selection Direct page query

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

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Q

What is your typical delivery time?

A

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 。

Q

Do you have centrifugal pumps in stock?

A

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.

Q

What information should I provide when requesting a quote?

A

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.

Q

What products do you mainly produce?

A

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.

Q

Could you help me with the selection?

A

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.

Q

Why is it so slow to get a price quote?

A

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.

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