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Home > Industrial Equipment & Components > Valve > Butterfly Valve > DNV Approved Marine Check Valve for Oil Systems, CB/T4303 Standard, PN1.6MPa

DNV Approved Marine Check Valve for Oil Systems, CB/T4303 Standard, PN1.6MPa

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DNV Approved Marine Check Valve for Oil Systems, CB/T4303 Standard, PN1.6MPa photo-5

Product Spotlights

This DNV-approved marine check valve ensures reliable one-way flow control in oil systems, complying with the CB/T4303 standard for a pressure rating of PN1.6MPa. Its robust construction, featuring corrosion-resistant materials and a reliable sealing mechanism, guarantees durability and safety in harsh marine environments. The product simplifies regulatory compliance for global shipyards and offers low maintenance, reducing lifecycle costs. Manufactured under an ISO9001-certified system, it is backed by extensive export experience to key maritime markets worldwide.

Negotiable MOQ: 1 Unit (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Marine Oil Systems

Product Standard:

CB/T4303

Approval:

DNV Approved

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Shanghai Zhibang Valve Manufacture Co.,ltd

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

Delivery time depends on order quantity.

Product Details
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Application Other, Marine Oil Systems

Product Standard CB/T4303

Approval DNV Approved

Nominal Pressure (PN) 1.6 MPa

Valve Type Check Valve / Non-return Valve

Connection Type Flanged (Standard), optional

Body Material Cast Steel / Ductile Iron

Seat Material Stainless Steel / Buna-N

Temperature Range -20°C to +120°C

As a professional manufacturer with a solid foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance marine fluid control solutions. Our DNV Approved Marine Check Valve for oil systems, manufactured in strict compliance with the CB/T4303 standard and rated for PN1.6MPa, is engineered to meet the rigorous demands of maritime applications. This valve is a cornerstone of reliable operation, preventing backflow and ensuring system integrity in critical oil lines onboard vessels.

Built with precision and durability in mind, this check valve is designed for seamless integration into various marine oil systems, including lube oil, fuel oil, and hydraulic oil circuits. Its certification by DNV (Det Norske Veritas) underscores its adherence to internationally recognized maritime safety and quality standards, providing shipowners and shipyards with confidence in our product's performance and longevity.

Key Features & Technical Advantages:

Robust Construction: The valve body is typically crafted from high-grade cast steel or ductile iron, offering excellent resistance to corrosion and mechanical stress in harsh marine environments.
Reliable Sealing: Equipped with a precision-machined seat and a resilient seal (often Buna-N or similar), ensuring a tight seal to prevent reverse flow and minimize pressure drop in the forward direction.
Low Maintenance Design: Engineered for long service intervals, the internal components are designed for durability, reducing the need for frequent maintenance and associated downtime.
Versatile Installation: Standard flanged connections facilitate easy installation and replacement within existing piping systems, compatible with common flange standards used in shipbuilding.
Stable Performance: The swing or lift check mechanism ensures swift and positive closure upon flow reversal, protecting pumps and other upstream equipment from damage.

Detailed Technical Specifications:

Parameter	Specification
Design & Manufacturing Standard	CB/T4303 (Chinese Ship Standard)
Approval / Certification	DNV (Det Norske Veritas) Type Approval
Nominal Pressure (PN)	1.6 MPa (16 bar)
Nominal Diameter (DN) Range	Available from DN15 to DN300 (customizable)
Suitable Medium	Marine Fuel Oil, Lubricating Oil, Hydraulic Oil
Operating Temperature Range	-20°C to +120°C
Connection Standard	Flanged as per GB, JIS, ANSI, DIN (specify upon request)

Benefits for Your Marine Operations:

Enhanced System Safety: Prevents dangerous backflow in oil systems, safeguarding critical machinery and ensuring operational safety.
Compliance Assurance: The combination of CB/T4303 and DNV approval simplifies regulatory compliance for new builds and retrofits, accepted by major classification societies.
Reduced Lifecycle Cost: Durable construction and reliable performance lead to fewer failures, lower maintenance costs, and extended service life.
Global Supply Chain Support: With annual export values between US$1-1.5 million and shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely delivery to your global projects.

Shanghai Zhibang Valve Manufacture operates under an ISO9001 certified quality management system, ensuring consistent product quality from raw material sourcing to final inspection. Our valves have been successfully supplied to a wide range of markets, including North America, Europe, Southeast Asia, Africa, and the Middle East, proving their adaptability and reliability across diverse maritime conditions. This track record, backed by our manufacturing expertise since 2016, makes this DNV Approved Check Valve a dependable choice for your marine oil system requirements. Contact us today to discuss your specifications and experience the Zhibang advantage in marine valve solutions.

Frequently Asked Questions (FAQ)

Q: What is the significance of DNV approval for this marine check valve?
A: DNV (Det Norske Veritas) approval is a globally recognized maritime certification. It signifies that the valve has been independently tested and verified to meet stringent international standards for safety, performance, and quality required for use on classified vessels, facilitating acceptance by shipyards and regulatory bodies.
Q: Can this valve be used with media other than oil?
A: While specifically designed and tested for marine oil systems (fuel, lube, hydraulic), its construction materials may be suitable for other compatible non-aggressive liquids. Please consult our technical team with your specific medium and conditions for confirmation.
Q: Are different flange standards available?
A: Yes. We can provide valves with flanges conforming to various standards such as GB, ANSI, JIS, or DIN. The specific standard and pressure class (e.g., PN16, Class 150) should be specified at the time of inquiry or order.
Q: What is the typical lead time for an order?
A: Lead time depends on the order quantity, size (DN), and specific configuration. Standard sizes are often available from stock or have shorter production cycles. We provide accurate lead time estimates upon receipt of your detailed requirements.
Q: Does the valve require regular maintenance?
A: Designed for low maintenance, these check valves are built for durability. However, periodic inspection as part of the vessel's overall maintenance schedule is recommended to check for any wear or debris accumulation, ensuring continued optimal performance.
Q: Is the PN1.6MPa pressure rating suitable for high-pressure hydraulic systems?
A: PN1.6MPa (approximately 16 bar/232 psi) is a common rating for many marine oil service lines. For higher-pressure hydraulic applications, valves with correspondingly higher pressure ratings (e.g., PN2.5MPa, PN4.0MPa) are available upon request.
Q: How does the CB/T4303 standard relate to other international standards?
A: CB/T4303 is a Chinese national standard specifically for marine valves. It incorporates requirements relevant to maritime applications and is widely recognized and accepted in international shipbuilding, especially when combined with approvals from classification societies like DNV.
Q: Do you provide documentation like material certificates and test reports?
A: Yes, as an ISO9001 certified manufacturer, we provide necessary documentation, including material certificates, pressure test reports, and the DNV approval certificate, which are crucial for your project documentation and classification society submissions.