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CB/T4303 Butterfly Check Valve for Seawater Cooling Systems
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CB/T 4303 compliant Butterfly Check Valve designed for harsh seawater cooling systems. Features corrosion-resistant materials like nickel-aluminum bronze and stainless steel for longevity. Compact wafer/lug design saves space and reduces pressure drop, enhancing system efficiency. Offers reliable backflow prevention to protect critical equipment. Manufactured under ISO9001 with global export experience to ensure dependable performance.
Negotiable
MOQ: 10 Units (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
Other, CB/T 4303
Application:
Other, Seawater Cooling Systems
Valve Type:
Butterfly Check Valve
Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
7 days
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Standard
Other, CB/T 4303
Application
Other, Seawater Cooling Systems
Valve Type
Butterfly Check Valve
Body Material
Ductile Iron, Cast Steel, Stainless Steel
Disc Material
Stainless Steel, Nickel-Aluminum Bronze
Seat Material
EPDM, NBR, PTFE
Pressure Rating
PN10, PN16, PN25
Connection Type
Wafer, Lug, Flanged
Size Range
DN50 to DN1200
As a professional manufacturer specializing in industrial valves, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our high-performance CB/T 4303 Butterfly Check Valve, engineered specifically for demanding seawater cooling applications. Established in 2016, we have dedicated ourselves to producing reliable fluid control solutions that meet stringent maritime and industrial standards. Our valves are designed to offer superior flow control and reliable backflow prevention in corrosive environments, ensuring the longevity and efficiency of your cooling systems. With an annual export value reflecting our global reach and commitment to quality, we provide products trusted by clients across diverse markets from North America to Southeast Asia.
This Butterfly Check Valve is a critical component for preventing reverse flow in seawater cooling circuits, protecting pumps, heat exchangers, and other expensive equipment from damage. Its compact design and efficient operation make it a preferred choice for shipbuilding, offshore platforms, coastal power plants, and desalination facilities.
Key Features & Technical Advantages:
- Corrosion-Resistant Construction: Manufactured using materials specifically selected for seawater service, such as nickel-aluminum bronze discs and stainless steel components, ensuring extended service life even in highly saline conditions.
- Low Pressure Drop Design: The butterfly-style disc offers minimal flow resistance when open, optimizing system efficiency and reducing energy consumption for pumping.
- Quick, Positive Closure: The disc closes rapidly under reverse flow conditions, providing effective check valve functionality to prevent water hammer and system backflow.
- Compact & Lightweight: Compared to traditional swing check valves, the wafer or lug design saves significant space and weight, simplifying installation in tight engine rooms or piping racks.
- Bidirectional Sealing (Optional): Certain models can be configured for bi-directional sealing, offering flexibility for complex piping layouts.
- Low Maintenance: Simple design with fewer moving parts reduces the need for frequent maintenance, lowering overall operational costs.
Detailed Technical Specifications:
| Parameter | Specification |
|---|---|
| Product Standard | CB/T 4303 (Chinese Ship Standard) |
| Nominal Pressure (PN) | PN10, PN16, PN25 (Customizable) |
| Nominal Diameter (DN) | DN50 to DN1200 (2" to 48") |
| Body Material | Ductile Iron, Cast Steel, Stainless Steel (CF8M) |
| Disc Material | Stainless Steel (316, 316L), Nickel-Aluminum Bronze |
| Seat Material | EPDM (for seawater), NBR, PTFE (Available upon request) |
| Connection Type | Wafer, Lug, Flanged (ASME/EN/JIS standards) |
| Temperature Range | -10°C to 120°C (Depends on seat material) |
| Face-to-Face | Compact, per relevant standard dimensions |
Benefits for Your Operations:
- Enhanced System Protection: Prevents reverse flow, safeguarding critical cooling system components from potential failure.
- Improved Operational Efficiency: Low pressure drop design contributes to lower pumping energy requirements.
- Reduced Lifetime Cost: Durable, corrosion-resistant materials and low-maintenance design translate to lower total cost of ownership.
- Global Compliance: Manufactured in a facility with ISO9001 certification, ensuring consistent quality control. Designed to meet CB/T standards widely recognized in maritime applications.
- Global Logistics Support: With major shipment ports including Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and reliable delivery to your project site anywhere in the world.
Our commitment to quality is backed by our ISO9001 certification and proven track record of exporting to over a dozen major markets worldwide, including North America, South America, Eastern Europe, Southeast Asia, and Western Europe. This global acceptance underscores the reliability and performance of our CB/T 4303 Butterfly Check Valves. We understand the critical nature of seawater cooling systems and engineer our valves accordingly. For a robust, efficient, and long-lasting solution that protects your investment, choose Shanghai Zhibang Valve. Contact us today to discuss your specific requirements or to request a detailed quotation.
Frequently Asked Questions (FAQ):
-
Q: What is the main advantage of a butterfly check valve over other types for seawater cooling?
A: The primary advantage is its compact design and lower pressure drop. Compared to swing or lift check valves, butterfly check valves offer a more space-saving profile and create less resistance to flow when open, which is crucial for optimizing pump efficiency in cooling systems. -
Q: Are your valves suitable for full seawater immersion or just cooling water service?
A: Our valves are designed for the seawater cooling circuit, which handles filtered and often treated seawater. For full immersion or more aggressive submerged service, specific material upgrades and configurations are available upon request. -
Q: Can you provide valves with different end connections than those listed?
A: Yes. While wafer, lug, and flanged are standard, we can accommodate custom end preparations such as different flange standards (ASME, EN, JIS) or special face-to-face dimensions based on your piping specifications. -
Q: What is the typical lead time for an order of DN300 valves?
A: Lead times vary based on material selection and order quantity. For standard materials like ductile iron with EPDM seats, typical production time is 4-6 weeks. We recommend contacting our sales team with your specific details for an accurate schedule. -
Q: Do you offer any testing or certification with the valves?
A> Our standard manufacturing process includes pressure testing and visual inspection as part of our ISO9001 quality system. Additional certifications like material test reports (MTRs) or third-party inspection can be arranged upon request. -
Q: How does the CB/T 4303 standard compare to international standards like API or ISO?
A> CB/T 4303 is a Chinese national standard specifically for shipbuilding, covering dimensions, materials, and testing for marine valves. It is widely recognized and accepted in global shipbuilding. It ensures the valve meets the rigorous demands of marine service, which often aligns with or exceeds general industrial standards. -
Q: What maintenance is required for these valves?
A> Maintenance is minimal. Periodic external inspection for corrosion and operational checks are recommended. The internal components, like the disc and seat, are designed for long life; however, access to internals for inspection or replacement is possible depending on the model. -
Q: Can the valve be used in other fluids besides seawater?
A> Yes. With appropriate material selection for the wetted parts (body, disc, seat), this valve design can be adapted for various other fluids, including fresh water, chemicals, or oils. Please consult our engineering team for your specific application.
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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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