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Home > Industrial Equipment & Components > Valve > Butterfly Valve > CB/T4303 Cast Steel Butterfly Check Valve for Marine Fuel Oil Transfer Systems DN125
CB/T4303 Cast Steel Butterfly Check Valve for Marine Fuel Oil Transfer Systems DN125
Product Spotlights
CB/T4303 standard marine cast steel butterfly check valve, DN125. Designed for fuel oil transfer systems, it prevents backflow with a compact, space-saving design and low pressure drop. Features durable cast steel construction, customizable flanges and seat materials, and is backed by ISO9001 certified manufacturing. Ideal for enhancing safety and efficiency in marine applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T4303
Application:
Other, Marine Fuel Oil Transfer Systems
Material:
Cast Steel
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Standard
CB/T4303
Application
Other, Marine Fuel Oil Transfer Systems
Material
Cast Steel
Size
DN125
Type
Butterfly Check Valve
Connection Type
Flanged (Typical)
Pressure Rating
Available upon request
Temperature Range
Customizable
Seat Material
Optional (e.g., Metal, Resilient)
Operation
Wafer or Lug Style
As a specialized manufacturer of industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents its CB/T4303 Cast Steel Butterfly Check Valve for Marine Fuel Oil Transfer Systems, DN125. Engineered to meet the rigorous demands of marine applications, this valve is designed to prevent backflow in fuel oil transfer lines, ensuring operational safety and system integrity. With our commitment to quality underscored by ISO9001 certification, we deliver robust and reliable flow control solutions trusted by clients across global markets from North America to Southeast Asia.
This valve combines the durability of cast steel construction with the efficient design of a butterfly check mechanism, offering a compact and cost-effective solution for critical marine piping systems. Its compliance with the CB/T4303 standard signifies adherence to specific technical requirements for marine valves, providing peace of mind for engineers and procurement specialists.
Core Features and Technical Advantages:
- Superior Material & Construction: Fabricated from high-grade cast steel, the valve body offers excellent resistance to corrosion and high-pressure conditions typical in fuel oil transfer. This material choice ensures long service life even in harsh marine environments.
- Efficient Butterfly Disc Design: The valve utilizes a swinging disc mechanism. During forward flow, the disc swings open with minimal pressure drop. When flow stops or reverses, the disc automatically closes to seal the line, preventing backflow effectively.
- Compact and Space-Saving: Compared to other check valve types (like swing check valves), the butterfly check design has a shorter face-to-face dimension, making it ideal for space-constrained engine rooms and piping layouts onboard vessels.
- Low Pressure Drop: The streamlined flow path created when the disc is fully open minimizes turbulence and pressure loss, contributing to energy efficiency in the fuel transfer system.
- Versatile Installation: The DN125 size is commonly supplied with flanged ends (wafer or lug style), facilitating straightforward installation between pipe flanges without the need for additional gaskets on the valve itself in wafer design.
- Customizable Configurations: While supplied as a standard unit per CB/T4303, options such as specific seat materials (metal or resilient), pressure ratings (PN16, PN25, etc.), and surface coatings can be tailored to project requirements.
Detailed Technical Specifications:
| Parameter | Specification |
| Product Standard | CB/T4303 |
| Nominal Diameter (DN) | 125 |
| Valve Type | Butterfly Check Valve (Non-Return Valve) |
| Body Material | Cast Steel (e.g., WCB, LCB) |
| Disc & Stem Material | Stainless Steel (e.g., 304, 416) or Coated Carbon Steel |
| Seat Material | Optional: Metal (Stellited) or Resilient (EPDM, NBR, Viton) |
| Connection Standard | Flanged per JIS, ANSI, GB, or DIN standards (specify required) |
| Design Pressure | Customizable (e.g., PN10, PN16, Class 150) |
| Applicable Fluid | Marine Fuel Oil (MDO, HFO), Lubricating Oil |
| Operating Temperature | Dependent on seat material selection |
Benefits for Your Marine Operations:
- Enhanced System Safety: Prevents reverse flow of fuel oil, protecting pumps and upstream equipment from damage and reducing the risk of spills or operational hazards.
- Reduced Maintenance: The robust cast steel construction and reliable sealing mechanism minimize wear and tear, leading to lower lifecycle costs and less downtime.
- Improved Flow Efficiency: The low-pressure drop design helps maintain optimal flow rates, which can contribute to fuel transfer efficiency and overall system performance.
- Global Compliance: Manufactured according to the CB/T4303 standard, it meets recognized specifications for marine valve applications, simplifying regulatory approval for shipbuilding and repair projects.
- Supply Chain Reliability: Sourced from an established manufacturer with consistent annual export volume, you benefit from stable supply, competitive pricing, and direct technical support.
Shanghai Zhibang Valve has been a trusted partner in the flow control industry since 2016, exporting high-quality valves to over a dozen major markets worldwide, including North America, Europe, and Southeast Asia. Our ISO9001 certified quality management system governs every stage of production, from material sourcing to final testing, ensuring that each CB/T4303 DN125 Butterfly Check Valve meets stringent performance criteria. We support flexible shipment from major Chinese ports like Shanghai and Guangzhou, facilitating smooth logistics for your global projects. Choose a valve solution that combines marine-grade durability, proven design, and manufacturer reliability. Contact us today for detailed quotations, technical datasheets, or to discuss your specific application requirements.
Frequently Asked Questions (FAQ)
-
Q: What is the main advantage of a butterfly check valve over a traditional swing check valve for marine fuel oil systems?
A: The butterfly check valve offers a more compact design with a shorter face-to-face length, which is crucial in the space-limited engine rooms of ships. It also typically provides a lower pressure drop when fully open, contributing to system efficiency. -
Q: Can this DN125 valve be used with fluids other than marine fuel oil?
A: While designed for fuel oil transfer, it can potentially be used for other compatible oil-based fluids or water services, provided the seat material and pressure/temperature ratings are suitable. Consultation on the specific fluid is recommended. -
Q: What flange standards are available for this valve?
A: We can manufacture valves with flanges conforming to various international standards such as ANSI, JIS, DIN, or GB. The specific standard needs to be specified at the time of inquiry or order. -
Q: Does the valve come with any external coatings or protections for the marine environment?
A: Standard finishes may include primer paint. However, specialized coatings like epoxy or galvanization for enhanced corrosion resistance are available as optional features upon request. -
Q: How does the CB/T4303 standard relate to other common valve standards like API or ISO?
A: CB/T standards are Chinese national standards specifically developed for shipbuilding and marine equipment. They define technical requirements for marine valves and are widely recognized and accepted in international shipbuilding, often aligning with or referencing broader ISO principles. -
Q: What is the typical lead time for an order of these valves?
A: Lead time depends on order quantity and specific configuration (e.g., special coatings, non-standard pressure rating). For standard DN125 valves, production can often be scheduled promptly. We provide accurate lead times with every quotation. -
Q: Is the valve suitable for both horizontal and vertical pipe installation?
A: Butterfly check valves are generally suitable for horizontal flow lines. For vertical installation, the orientation (flow-up or flow-down) is critical, and specific design considerations may apply. Please consult our technical team for guidance on vertical installation. -
Q: What kind of testing is performed on the valves before shipment?
A: Each valve undergoes routine tests which may include shell strength tests (hydrostatic) and seat leakage tests as per the applicable standard (CB/T4303) and customer requirements. Detailed test reports can be provided.
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1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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