SJG Series Marine Diagonal Flow Fan


About product

A SJG series diagonal flow fan is a type of marine axial fan that combines features of both axial flow fans and centrifugal fans. It is designed to provide a balance between high airflow and increased pressure capabilities. Compared to axial flow fans, diagonal flow fans tend to have higher pressure capabilities due to the radial airflow component. However, they typically have lower pressure capabilities compared to centrifugal fans. The design of diagonal flow fans allows for a more compact size compared to centrifugal fans, making them suitable for installations with limited space.

Additional information



Air Flow Rate





SJG series / FSJG series

Product Detail

The construction of a diagonal flow fan includes a cylindrical housing with an impeller positioned inside. The impeller consists of a series of blades or vanes that are curved in shape. These curved blades allow the marine axial fan to generate both axial and radial airflow components.

When the diagonal flow fan is in operation, air enters the marine fan through the axial inlet and is driven forward by the rotation of the impeller. The curved blades impart a tangential velocity to the air, resulting in an additional radial component of airflow.

diagonal flow fan

SJG Series Marine Diagonal Flow Fan Structure

The marine fan features a unique diagonal flow structure, which allows it to effectively handle situations where axial flow fans cannot meet the requirements of duct ventilation. This makes it an ideal choice in such scenarios.

The SJG inclined flow pipe fan is suitable for transporting non-corrosive air and gas. However, it should not be used for gases containing viscous substances or with a high concentration of dust and rigid particles exceeding 150 kg/m³. By replacing the motor with an explosion-proof variant and utilizing aluminum impellers, plastic wheels, or FRP wheels, it can also handle flammable and explosive gases.

It is important to note that the temperature of the gas being conveyed should not exceed 80℃ to ensure optimal performance and longevity of the marine fan.

SJG Series Diagonal Flow Fan Parameter

Know Who We Are

About our company

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.


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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Zava Marine