Contact Platform Support
Help Center
Home > Industrial Equipment & Components > Valve > Butterfly Valve > CB/T4303 Large Diameter Check Valve for Shipboard Fuel Oil Transfer Lines, DN400
CB/T4303 Large Diameter Check Valve for Shipboard Fuel Oil Transfer Lines, DN400
Product Spotlights
Marine-grade DN400 check valve compliant with CB/T 4303, designed for reliable backflow prevention in shipboard fuel oil transfer lines. Features robust construction with material options for corrosion resistance, low pressure drop, and easy maintenance. Supports global flange standards and is backed by ISO9001 certified manufacturing. Enhances system safety and operational reliability for vessels.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Shipboard Fuel Oil Transfer Lines
Product Type:
Large Diameter Check Valve
Nominal Diameter (DN):
400
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
Related Products
-
Wafer Type Marine Check Valve, DN600, PN1.6MPa, Compliant With CB/T4303 StandardNegotiableMOQ: 1 Unit -
DNV Approved Marine Check Valve for Oil Systems, CB/T4303 Standard, PN1.6MPaNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Check Valve for Fuel Oil Transfer Systems on VesselsNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Check Valve For Oil, Cast Steel Body With NBR Seal DN50-DN300NegotiableMOQ: 1 Unit
-
Marine Oil Check Valve CB/T4303, Cast Steel Construction, PN4.0MPa Pressure RatingNegotiableMOQ: 1 Unit
Application
Other, Shipboard Fuel Oil Transfer Lines
Product Type
Large Diameter Check Valve
Nominal Diameter (DN)
400
Connection Type
Flanged (Standard)
Body Material
Cast Steel or Ductile Iron
Seat Material
Stainless Steel or Nitrile Rubber
Pressure Rating
PN10, PN16, PN25 (Customizable)
Operation Mode
Automatic, Non-Return
Installation Orientation
Horizontal or Vertical
Compliance
CB/T 4303 Marine Standard
As a specialized manufacturer of industrial valves since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. is proud to present our high-performance CB/T4303 Large Diameter Check Valve, engineered specifically for critical shipboard fuel oil transfer lines. With an annual export value reflecting our global reach, we understand the stringent demands of marine applications. This DN400 valve is designed to prevent backflow in fuel systems, ensuring operational safety, protecting expensive pumps and equipment, and maintaining the integrity of the fuel transfer process on vessels. It represents our commitment to delivering reliable, durable flow control solutions that meet international marine standards.
Core Features & Technical Advantages:
- Marine-Grade Construction: Manufactured in compliance with the Chinese CB/T 4303 standard for ship piping, ensuring suitability for marine environments with considerations for vibration, corrosion, and operational pressures.
- Robust Design for Large Diameter Flow: The DN400 (approximately 16-inch) size is optimized for main fuel oil transfer headers, offering low flow resistance and high capacity to support efficient bunkering and internal fuel distribution.
- Reliable Non-Return Function: Features a swing-type or lift-type disc mechanism (depending on model) that automatically closes upon flow reversal, providing a tight seal to prevent dangerous backflow of fuel oil.
- Corrosion & Wear Resistance: Critical wetted parts, such as the disc and seat, are available in materials like stainless steel or coated alloys to withstand the abrasive and corrosive nature of marine fuel oils.
- Minimal Pressure Drop: The internal design aims to streamline flow when open, minimizing energy loss in the pumping system and contributing to overall fuel transfer efficiency.
- Easy Maintenance & Inspection: Many models feature a bolted cover or access port, allowing for internal inspection, seat replacement, or cleaning without removing the entire valve from the pipeline, reducing vessel downtime.
- Versatile Installation: Suitable for installation in both horizontal and vertical pipelines (subject to specific model design), providing flexibility in shipboard piping layout.
- Flanged Connections: Standard flanged ends (e.g., ANSI, JIS, DIN, GB standards available) ensure a secure, leak-proof connection to the ship's fuel oil piping system.
Technical Specifications & Options:
| Parameter | Specification / Option |
| Product Standard | CB/T 4303 (Ship Piping) |
| Nominal Diameter (DN) | 400 |
| Pressure Rating | PN10, PN16, PN25 (Common), Others Available |
| Body Material | WCB (Cast Carbon Steel), Ductile Iron, Other Cast Alloys |
| Disc & Seat Material | Stainless Steel (304/316), Nitrile Rubber, PTFE, Metal-Seated |
| Connection Standard | ANSI B16.5, JIS B2220, DIN 2501, GB/T 9113, etc. |
| Operating Temperature | -20°C to +200°C (Dependent on Seat Material) |
| Suitable Medium | Marine Fuel Oil (HFO, MDO, MGO), Lubricating Oil |
| Type | Swing Check Valve, Lift Check Valve |
Benefits for Your Operations:
- Enhanced System Safety: Prevents reverse flow that could lead to pump damage, system contamination, or operational hazards.
- Reduced Maintenance Costs: Durable construction and appropriate material selection extend service intervals and lower the total cost of ownership.
- Improved Operational Reliability: Ensures uninterrupted fuel flow to engines and boilers, supporting vessel propulsion and auxiliary systems.
- Regulatory Compliance: Designed and manufactured to meet relevant marine standards, aiding in classification society approvals.
- Global Supply Support: With shipment capabilities from major ports like Shanghai, Guangzhou, and Hong Kong, we ensure timely delivery to shipyards and fleets worldwide.
Trust & Commitment:
Shanghai Zhibang Valve operates with a ISO9001 certified quality management system, ensuring consistent manufacturing quality and traceability for every valve, including this large-diameter check valve. Our products have gained trust in diverse markets across North America, South America, Europe, Asia, Africa, and Oceania. This global acceptance underscores the reliability and performance of our valves in demanding applications. We combine this proven track record with the technical precision required for marine fuel systems. Choosing our CB/T4303 DN400 Check Valve means investing in a component built for longevity, safety, and performance. Contact us today to discuss your project specifications, request a detailed quotation, or learn more about our full range of marine valves.
Frequently Asked Questions (FAQ):
-
Q: Is this valve suitable for heavy fuel oil (HFO)?
A: Yes, it is specifically designed for shipboard fuel oil transfer, including Heavy Fuel Oil (HFO). Material selections like stainless steel components and appropriate seals are recommended to handle HFO's characteristics. -
Q: Can you provide valves with flanges matching specific standards like ANSI or JIS?
A: Absolutely. We commonly manufacture valves with flanges per ANSI, JIS, DIN, or GB standards. Please specify your required flange standard and pressure class when inquiring. -
Q: What is the main difference between swing check and lift check types for this application?
A: Swing check valves are generally used for horizontal lines and offer lower pressure drop. Lift check valves can be used in horizontal or vertical lines and may provide faster closing. The best choice depends on your specific piping layout and flow dynamics. -
Q: What is the typical delivery lead time for a DN400 valve?
A: Lead time varies based on material specifications and order quantity. For standard configurations, it typically ranges from 4 to 8 weeks. We provide accurate timelines upon order confirmation. -
Q: Do you offer any testing or certification for the valves?
A: Valves undergo standard factory tests like shell test and seat test. Additional certifications or tests as required by classification societies (e.g., ABS, DNV, LR) can be arranged upon request. -
Q: How do we determine the correct pressure rating (PN) for our system?
A: The pressure rating should be equal to or greater than the maximum working pressure in your fuel oil transfer line. Common marine ratings are PN16 or PN25. Our technical team can assist based on your system parameters. -
Q: Is external coating or painting included?
A: Yes, a standard protective coating (e.g., epoxy paint) suitable for marine environments is applied. Special coatings or colors can be specified for an additional cost. -
Q: Do you provide installation and maintenance guidance?
A: Yes, detailed installation, operation, and maintenance manuals are provided with the product to ensure correct fitting and long service life.
Send Inquiry to This Supplier
* Email
Want the best price?
Post an RFQ now!
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
You May Also Like
-
CB/T4303 Marine Oil Check Valve With Mill Test Report and 2-Year WarrantyNegotiableMOQ: 1 Unit
-
Marine Check Valve Standard Compliant With CB/T4303, Includes Installation SupportNegotiableMOQ: 1 Unit
-
Wafer Type Marine Check Valve for Oil, Compliant With CB/T4303 Standard, DN300 SizeNegotiableMOQ: 1 Unit
-
Marine Check Valve for Lube Oil Systems, Engine Room Application, CB/T4303 StandardNegotiableMOQ: 1 Unit
-
CB/T4303 Standard Marine Check Valve, For Shipboard Oil Pipelines, PN1.6-4.0MPaNegotiableMOQ: 1 Unit
-
Marine Check Valve CB/T4303, Cast Steel Body NBR Seal for Oil Service DN50-DN300NegotiableMOQ: 1 Unit
-
CB/T4303 Swing Check Valve for Marine Seawater Applications, 200mm to 600mm Size RangeNegotiableMOQ: 1 Unit
-
CB/T4303 Marine Check Valve With Extended Warranty for Seawater Corrosion ResistanceNegotiableMOQ: 1 Unit
-
CB/T4303 Wafer Type Marine Check Valve, DN50 to DN600, Designed for Seawater ServiceNegotiableMOQ: 1 Unit
-
CB/T4303 Seawater Check Valve Supplied With Full Material Traceability DocumentationNegotiableMOQ: 1 Unit
