Contact Platform Support
Help CenterCB/T4303 Marine Butterfly Check Valve With 5-Year Warranty, Cast Steel Body, Stainless Steel Internal Components
Product Spotlights
Related Products
-
Marine Butterfly Check Valve for Seawater System Backflow Prevention, CB/T4303 Compliant, Stainless Steel ConstructionNegotiableMOQ: 1 Unit -
CB/T4303 Butterfly Check Valve for Marine Bilge and Ballast Systems, Wafer Design, Corrosion ResistantNegotiableMOQ: 1 Unit
-
CB/T4303 Standard Marine Butterfly Check Valve, Technical Support and Installation Guide Available, DNV Type ApprovedNegotiableMOQ: 1 Unit
-
OEM Marine Valve Factory Offering Extended Warranty & Mill Test ReportsNegotiableMOQ: 1 Unit
-
Reliable OEM Partner for Marine Butterfly Valves, GB/T3036, Project Bulk SupplyNegotiableMOQ: 1 Unit
As a leading manufacturer with a strong commitment to quality and reliability, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T4303 Marine Butterfly Check Valve. Engineered for demanding marine applications, this valve combines robust construction with precision performance to ensure the safety and efficiency of your shipboard piping systems. Our extensive experience since 2016 in serving global markets, including North America, Southeast Asia, and Europe, has honed our expertise in producing valves that meet the rigorous standards of the maritime industry. This particular valve is a testament to our dedication, featuring a durable cast steel body and corrosion-resistant stainless steel internals, all backed by a comprehensive 5-year warranty for your peace of mind.
The design of our butterfly check valve focuses on preventing backflow in pipelines with minimal pressure drop and reliable sealing. Its compact and lightweight structure makes installation and maintenance straightforward, even in the confined spaces typical of marine environments. The valve's internal components are crafted from high-grade stainless steel, providing excellent resistance to seawater corrosion, erosion, and cavitation, which are common challenges in marine operations. This ensures a long service life and reduces the total cost of ownership by minimizing downtime and replacement needs.
Key Features and Technical Advantages:
- Superior Durability: The cast steel body offers high tensile strength and impact resistance, suitable for high-pressure marine systems.
- Corrosion Resistance: Stainless steel disc, stem, and other internals resist pitting and crevice corrosion from saltwater.
- Bidirectional Sealing: Provides effective sealing against backflow in both flow directions, enhancing system safety.
- Low Torque Operation: The streamlined disc design ensures easy opening and closing with low operating torque.
- Minimal Pressure Drop: The wafer-type design creates minimal flow restriction, improving system efficiency.
- Versatile Installation: Can be installed between ANSI or DIN standard flanges without the need for additional gaskets.
- Customizable Options: Various seat materials (like EPDM, NBR, PTFE) and coatings are available upon request to suit specific media and temperature conditions.
The valve operates on a simple yet effective principle: the disc, mounted on a shaft, rotates to allow forward flow. When flow reverses, the pressure differential automatically swings the disc back to its closed position against the seat, creating a tight seal. This automatic action is crucial for protecting pumps, compressors, and other equipment from damage due to reverse flow.
Technical Specifications Table:
| Parameter | Specification |
|---|---|
| Design Standard | CB/T 4303 |
| Pressure Rating | PN10, PN16, PN25 (or Class 150, 300) |
| Temperature Range | -20°C to +150°C (depends on seat material) |
| Applicable Media | Seawater, Fresh Water, Oils, Air, Weak Corrosive Fluids |
| End Connection | Wafer, Lug, Double Flange |
| Operation | Automatic (flow-dependent) |
For our clients, the benefits are clear: enhanced system reliability through dependable backflow prevention, reduced maintenance costs due to the durable materials and long warranty, and impro operational safety in critical marine applications. Whether for ballast systems, cooling water lines, fuel transfer, or firefighting systems on vessels, this valve delivers consistent performance.
Trust in Shanghai Zhibang Valve is built on a solid foundation. Our ISO9001 certification underpins a stringent quality management system for every valve we produce. With an annual export value ranging between US$1 Million to US$1.5 Million, we have successfully delivered reliable valve solutions to partners across six continents, from Eastern Europe to Oceania. Our strategic location allows for efficient logistics via major ports like Shanghai, Guangzhou, and Hong Kong, ensuring timely delivery. The 5-year warranty on this Marine Butterfly Check Valve is not just a promise; it's a reflection of our confidence in its quality and durability. Choose a partner committed to your project's success. Contact us today for a quotation or to discuss your specific application requirements.
Frequently Asked Questions (FAQ):
-
Q: What does the "CB/T 4303" standard refer to?
A: CB/T 4303 is a Chinese industry standard for shipbuilding, specifically covering marine butterfly valves. It defines the technical requirements, testing methods, and inspection rules for butterfly valves used on ships, ensuring they meet the necessary safety and performance criteria for maritime use. -
Q: Is this valve suitable for seawater applications?
A: Yes, it is specifically designed for marine environments. The stainless steel internal components provide strong resistance to corrosion from seawater. The body material (cast steel) can also be coated or treated for additional protection if specified. -
Q: What is the main advantage of a butterfly check valve over other types?
A: Butterfly check valves offer a compact, lightweight design with a low-pressure drop. They are easier to install in tight spaces compared to swing check valves and are generally more cost-effective for larger pipe sizes, making them ideal for space-constrained marine systems. -
Q: Can the valve be installed in any orientation?
A: For optimal performance and to ensure proper disc closure, it is recommended to install the valve in a horizontal pipeline with the shaft in a horizontal position. Installation in vertical lines is possible but should be evaluated based on specific flow conditions; please consult our engineers. -
Q: What maintenance does this valve require?
A: Due to its simple design and robust materials, maintenance requirements are minimal. Periodic visual inspection for external corrosion and checking for smooth disc movement are recommended. The long warranty period reflects its low-maintenance design. -
Q: Are other materials available for the body or seat?
A: Yes. While the standard configuration features cast steel and stainless steel, we offer customization. Body materials like ductile iron or different grades of stainless steel (CF8M, etc.) and various elastomer or PTFE seats can be provided to match specific media, pressure, and temperature requirements. -
Q: How does the 5-year warranty work?
A: Our warranty covers defects in materials and workmanship under normal use for a period of five years from the date of shipment. It includes repair or replacement of the faulty valve. Specific warranty terms and conditions are provided with the commercial documentation. -
Q: What information do you need to provide a quote?
A: To provide an accurate quotation, please specify the nominal size (DN/NPS), pressure rating (PN/Class), connection type (wafer/lug), seat material preference, required quantity, and any special coating or testing requirements.
Send Inquiry to This Supplier
You May Also Like
-
Butterfly Valves for Marine Engine Cooling & Firefighting Systems per GB/T3036NegotiableMOQ: 1 Unit
-
Custom Marine Butterfly Valve Production, GB/T3036 Standard, Lug & Wafer DesignNegotiableMOQ: 1 Unit
-
Ductile Iron Marine Butterfly Valve Factory Compliant With GB/T3036 StandardNegotiableMOQ: 1 Unit
-
Marine Butterfly Valve Manufacturer, GB/T3036, Manual/Gear/Actuator Operated OptionsNegotiableMOQ: 1 Unit
-
GB/T3036 Marine Butterfly Valve in 316 Stainless Steel With PTFE Seat for OEMNegotiableMOQ: 1 Unit
-
GB/T3036 Standard Marine Butterfly Valve, PN0.6-1.6MPa Pressure Rating for Ballast Water TreatmentNegotiableMOQ: 1 Unit
-
GB/T3036 Marine Butterfly Valve Supplier With Technical Support & Spare PartsNegotiableMOQ: 1 Unit
-
GB/T3036 Compliant Butterfly Valves for Shipboard Seawater & Ballast SystemsNegotiableMOQ: 1 Unit
-
OEM Factory for Marine Butterfly Valves, GB/T3036, Cast Steel Body & EPDM LinerNegotiableMOQ: 1 Unit
-
GB/T3036 Marine Butterfly Valve for Ballast Water, Ductile Iron Body, 316L Stainless Steel Disc, DN50-DN600NegotiableMOQ: 1 Unit
