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

PNJ Rubber-Lined Pump



classification:

Other pumps

keyword:

Horizontal Single-Stage Fire Pump

Product overview Product parameters Why choose us? Frequently Asked Questions

Product Overview

  The PNJ pump series is a single-stage, single-suction centrifugal pump with rubber lining, capable of conveying slurry containing various solid particles that do not have sharp edges. The maximum concentration of the slurry that can be conveyed is no more than 65% (by weight), and the temperature must not exceed 60℃. Although the two pump models share the same structural design, they differ in material composition; the PNJF pump is specifically designed for conveying corrosive slurries.

Product Parameters

Parameter Range of PNJ Rubber-Lined Pump

  For example: 2PNJFA

  2——The mouth diameter is divided by 25.

  P——Impurity Pump

  N——mud pump

  J——Rubber Lining

  F——Corrosion-resistant type

  A——First Improvement

 

Structural Description of the PNJ Rubber-Lined Pump

  The clearance between the impeller and the casing, as well as between the impeller and the guard plate, can be adjusted to ensure efficient operation. The shaft seal comes in two designs: a back vanes seal and a packing seal. When using the back vanes seal, the inlet filling height must not exceed 5 meters; when using the packing seal, the shaft should be pressurized with a fluid exceeding the working pressure by 1 kg/cm².

  Sealing Types: Pumps of models PNJ and PNJF are available with two different sealing configurations: packing seal and auxiliary impeller seal (pumps of models 25PNJ and 25PNJF are equipped exclusively with the auxiliary impeller seal). Typically, the sealing configuration is supplied as a packing seal. If an auxiliary impeller seal is to be selected, this must be explicitly stated at the time of order. When using an auxiliary impeller seal for the pump, the inlet filling height should not exceed 5 meters of water column (for pumps of models 25PNJ and 25PNJF, the maximum allowable inlet filling height is 1.5 meters of water column).

  Depending on the application, the pump shafts of the PNJ-type rubber-lined slurry pumps are made of high-quality carbon steel or nickel-chromium steel, while the casing is composed of wear-resistant rubber, wear- and acid-resistant rubber combined with steel plates. The impellers feature a cast steel skeleton (for models 25PN and 25PNJF, the skeletons are made of cast iron) externally lined with wear-resistant rubber, wear- and acid-resistant rubber, or rubber, respectively.

 

Performance Parameter Table for PNJ Rubber-Lined Pumps

Model Flow rate Q Head height
H
Rotational speed
N (revolutions per minute)
Power N Efficiency
N (%)
Impeller diameter
D 2 (Millimeters)
Pump weight
(kilograms)
Cubic meters per hour Liters per second Shaft power Gear motor
2PNJB
2PNJFB
(2PNJA)
(2PNJFA)
 27 7.5 40 1900 10.5 18.5
Y180M-4
28 277 400
40 11.1 38 11.8 35
50 13.9 36 12.3 40
2PNJB
2PNJFB
(2PNJA)
(2PNJFA)
27 7.5 22 1470 5.4 11
Y160M-4
  30 277 400
40 11.1 21 6.17   37
50 13.9 19 6.47   40
4PNJA
4PNJFA
95 26.4 43 1470 25.3 55
Y250M-4
44 460 400
130 36.5 41 29 50
160 44.5 40 31 56
4PNJA
4PNJFA
 80 22.2 30.5 1230 15.1 30
Y200L-4
44 360 460
110 30.6 28.5 17.1 50
136 37.8 28 18.2 57
6PNJB
6PNJFB
(6PNJA)
(6PNJFA)
250 69.5 38 980 44.6 75
Y315SL-4
58 490 1070

Friendly Reminder : For performance parameters, please go directly to 【 Pump Selection 】Direct query on the 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

Image Name

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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