Marine CWL Series Horizontal Centrifugal Pump

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The CWL series marine horizontal centrifugal pump is a ship-specific pump featuring advanced structure and superior performance. It offers outstanding characteristics such as compact design, small footprint, light weight, reliable operation, and easy maintenance, making it suitable for a wide range of marine and land-based fluid transfer applications.

  • The pump casing is made of high-strength cast iron or marine-grade alloys, ensuring seawater corrosion and high-pressure resistance.
  • The closed, single-suction impeller is dynamically balanced for smooth operation and optimal hydraulic performance, with optional bronze or stainless steel materials.
  • The stainless steel shaft provides excellent strength and corrosion resistance, ensuring efficient, long-term performance.
  • Bearings use grease or oil-bath lubrication and support heavy-duty use, a cooling option is available for high-temperature conditions.
  • The sealing system features high-performance mechanical or optional packing seals for reliable leak prevention.
  • Flexible or custom couplings ensure stable power transmission from motor or diesel engine.
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Best Marine CWL Horizontal Centrifugal Pump

The CWL series marine horizontal centrifugal pump adopts a single-stage, single-suction, overhung centrifugal design. Its core components include the pump casing, pump cover, impeller, pump shaft, bearing assembly, mechanical seal, and coupling. The overall design emphasizes compact structure and marine system compatibility, ensuring efficient performance within the limited space of ship engine rooms. This series is primarily used in shipboard systems as fire pumps, cooling water pumps, and domestic water pumps, and is capable of maintaining stable performance even under prolonged high-load operation. Its horizontal compact configuration effectively saves space in the engine room and allows for easy installation and servicing.

  1. The pump adopts a horizontal overhung structure, featuring axial inlet and radial outlet flow design. The pump casing is integrally cast with the volute and suction pipe, providing high structural strength and alignment accuracy. This design effectively reduces vibration and noise, ensuring stable and reliable operation.
  2. In terms of sealing, the shaft seal is available in either soft packing seal or mechanical seal, depending on the working conditions. The packing seal offers a simple structure and is easy to replace, making it suitable for general applications. The mechanical seal, on the other hand, is ideal for applications requiring higher sealing performance or handling corrosive media. It effectively prevents leakage, reduces maintenance frequency, and extends service life.
  3. When equipped with a self-priming device, the pump offers excellent self-priming capability, enabling quick startup without manual priming. In this configuration, it can function as a bilge pump, widely used for discharging bilge water or emergency drainage onboard, enhancing the ship’s operational safety and drainage efficiency.
  4. The impeller is optimized using advanced hydraulic modeling, resulting in improved hydraulic efficiency and reduced vibration and noise during operation. Compared with traditional centrifugal pumps, the CWL series achieves 10%–30% energy savings under similar conditions, delivering outstanding energy efficiency and low-noise performance—ideal for applications with strict requirements for power consumption and acoustic environment.
  5. With a well-balanced design focused on performance and maintainability, the CWL pump is a reliable and cost-effective solution for long-duration, continuous-duty marine and industrial fluid transfer systems.

Marine CWL Series Horizontal Centrifugal Pump Parameters

Model

Flow Rate(m3/h)

Hydraulic Head(m)

Rotational Speed(r/min)

Motor Power(kw)

NPSHr (m)

40CLZ-2(Z)

5

60

2950

5.5

4.0

50CLZ-9(Z)

27

14.5

3

4.0

65CLZ-6(Z)

25

32

5.5

4.0

80CLZ-13(Z)

45

21

5.5

4.0

100CLZ-4

80

100

45

5.2

125CLZ-14

200

50

55

6.0

125CLZ-12

160

45

45

6.0

150CLZ-20

200

23

37

5.0

 

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Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.

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Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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