Marine Type U Double Soft Sleeve Flange Butterfly Valve

About product

The Marine Type U Double Flange Soft Sleeve Butterfly Valve is designed to operate at two different working pressures: PN10 (Pressure Nominal 10 bar) and PN16 (Pressure Nominal 16 bar). The valve undergoes testing to ensure its reliability. During the testing process, the valve’s shell is subjected to a pressure that is 1.5 times the rated pressure, while the seat is tested at a pressure that is 1.1 times the rated pressure.

The flanged valve is suitable for a wide range of temperatures, depending on the type of sleeve used. If the valve is equipped with an NBR (Nitrile Butadiene Rubber) sleeve, it can operate within a temperature range of -10°C to 80°C. However, if it is fitted with an EPDM (Ethylene Propylene Diene Monomer) sleeve, it can withstand temperatures from -10°C to 120°C.

In terms of media compatibility, this flanged butterfly valve is designed to handle various substances. It is suitable for use with water, oil, and gas, making it a versatile option for different applications.

Additional information


EN 593 , MSS SP67 API 609 BS5155

Inspection & Test

API 598 ISO 5208 EN 12266

Face to face

ISO 5752 , EN 558 , MSS SP67 and API 609 DIN3202

Material of Seal Surface

Soft Sealed

Working Pressure

Low Pressure (Pn<1.6mpa)

Product Detail

Flanged Valve – Type U Flanged Butterfly Valve

The Marine Type U Double Flange Soft Sleeve Butterfly Valve is manufactured using a variety of materials for its different components. The body of the flanged valve can be made of cast iron or ductile iron, providing strength and durability. The seat of the valve is available in different options such as EPDM, NBR, VITON, and PTFE, allowing for compatibility with various media and temperature ranges.

The disc of the flanged butterfly valve is made from materials such as nickel ductile iron, AI bronze, or stainless steel, providing corrosion resistance and reliable performance. The stem, which controls the movement of the disc, can be constructed using carbon steel or stainless steel, ensuring strength and resistance to wear.

The bushing, used for smooth rotation of the stem, is made of PTFE, a low-friction material that enhances the valve’s operation. The “O” ring, providing a seal between different parts of the flange butterfly valve, is also made of PTFE.

Stainless steel is utilized for the pin and key components, ensuring durability and resistance to corrosion. These materials are carefully selected to meet the requirements of the flanged valve, considering factors such as working pressure, temperature, and compatibility with the media, ensuring reliable and efficient operation.

Parameter Of U Type Flanged Butterfly Valve

marine type u double flange soft sleeve butterfly valve




24"52045075592151813749.365816-35.14-1 1/447.82101654-222253.981658.0280
36"70563011086520311681085.898728-41.14-1 1/260.53002548-183480.002290.0660
48"910790150116027615111422.4130240-41.14-1 1/269.93502988-2234105.0028117.01600
60"10801040200145738118541758.9163844-47.68-1 3/479.54153568-3340140.0036156.03500
66"11501132200161045720321930.4180244-47.68-1 3/485.84754068-4050140.0036156.04000
72"12801270280177545721972095.5189352-47.68-1 3/488.956048312-4055150.0040178.05625



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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