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CB/T4303 Stainless Steel Check Valve With 18-Month Warranty Against Material and Workmanship Defects
Product Spotlights
CB/T4303 standard stainless steel check valve featuring premium corrosion-resistant materials (304/316/316L) for long service life. Offers reliable backflow prevention with low pressure drop. Available in sizes DN15-DN600 and pressure ratings PN10-PN40 with flanged, threaded, or welded connections. Backed by an 18-month warranty against material and workmanship defects, supported by ISO9001 certified manufacturing. Suitable for water treatment, chemical, marine, and industrial applications.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Standard:
CB/T4303
Application:
Other, Pipelines
Material:
Stainless Steel (304/316/316L)
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, Pipelines
Material
Stainless Steel (304/316/316L)
Connection Type
Flanged, Threaded, Welded
Size Range
DN15 - DN600
Pressure Rating
PN10 - PN40
Warranty
18 Months Against Material/Workmanship Defects
Seal Material
PTFE, Metal, EPDM
Optional Features
Indicator, Locking Device
As a professional valve manufacturer established in 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance fluid control solutions for global industrial markets. Our CB/T4303 Stainless Steel Check Valve represents our commitment to quality and reliability, designed to prevent backflow and protect critical piping systems. With an 18-month warranty covering material and workmanship defects, we provide our B2B clients with not just a product, but a dependable, long-term partnership backed by our ISO9001 certified manufacturing processes.
This valve is engineered for durability and consistent performance in demanding environments. Its robust stainless steel construction ensures excellent resistance to corrosion, erosion, and a wide range of media, making it a versatile choice for numerous applications. The design adheres to the CB/T4303 standard, ensuring dimensional accuracy and compatibility with standard piping systems.
Key Features & Technical Advantages:
- Superior Corrosion Resistance: Manufactured from premium-grade stainless steel (304, 316, or 316L), this valve withstands corrosive fluids, high temperatures, and harsh industrial or marine atmospheres, significantly extending service life.
- Reliable Backflow Prevention: The swing-type disc design ensures quick, positive sealing upon flow reversal, effectively protecting pumps, compressors, and other upstream equipment from damage caused by backflow.
- Low Pressure Drop & Smooth Flow: The streamlined internal passage and full-port design minimize flow resistance and turbulence, enhancing system efficiency and reducing energy consumption.
- Robust Construction & Leak-Proof Sealing: Precision machining and high-integrity welding (where applicable) guarantee a robust body. Multiple seal material options (PTFE, Metal, EPDM) provide a tight shut-off suitable for specific media and temperature ranges.
- Easy Installation & Maintenance: Available in flanged, threaded, or weld-end configurations, the valve facilitates straightforward integration into existing pipelines. Its design often allows for inline maintenance without complete removal from the system.
- Versatile Application Range: Suitable for a broad spectrum of industries including water supply and treatment, chemical processing, petrochemical, marine and offshore, food and beverage, pharmaceuticals, and general industrial piping.
Detailed Technical Specifications:
| Parameter | Specification / Option |
|---|---|
| Product Standard | CB/T4303 |
| Body Material | Stainless Steel 304, 316, 316L |
| Size Range (Nominal Diameter) | DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600 |
| Pressure Rating (PN) | PN10, PN16, PN25, PN40 |
| Connection Types | Flanged (RF, FF), Threaded (NPT, BSPT/BSPP), Butt Weld |
| Seal Material | PTFE, Metal (Stainless Steel), EPDM, NBR (customizable) |
| Temperature Range | -20°C to +200°C (varies with seal material) |
| End-to-End Dimensions | As per CB/T4303 standard or customer request |
Benefits for Your Operations:
- Enhanced System Protection: Prevents costly damage to equipment from backflow, reducing downtime and maintenance costs.
- Long-Term Cost Efficiency: The corrosion-resistant stainless steel body and reliable sealing reduce replacement frequency and total cost of ownership.
- Operational Safety: Ensures unidirectional flow, maintaining system pressure integrity and contributing to a safer working environment.
- Global Compliance & Compatibility: Manufactured to the recognized CB/T4303 standard, ensuring quality and facilitating procurement for projects with specific standard requirements.
- Supply Chain Confidence: Backed by our 18-month warranty, you gain assurance in product quality and our commitment to standing behind our manufacturing.
Shanghai Zhibang Valve's commitment to quality is demonstrated through our ISO9001 certification, ensuring consistent manufacturing control. With an annual export value ranging between US$1 Million and US$1.5 Million, we have established a strong presence across North and South America, Europe, Asia, Africa, and Oceania, proving our ability to meet diverse international market demands. Our strategic location in Shanghai and multiple shipment ports (Shanghai, Guangzhou, Hong Kong, Beijing) enable efficient and flexible logistics to serve your project timelines. Choose our CB/T4303 Stainless Steel Check Valve for a solution that combines robust performance, industry-standard compliance, and the tangible security of an extended manufacturer's warranty.
Frequently Asked Questions (FAQ):
-
What does the 18-month warranty cover exactly?
Our warranty covers defects in materials and workmanship under normal use and service conditions for 18 months from the date of shipment. It includes repair or replacement of the defective valve at our discretion. -
Is the CB/T4303 standard compatible with international piping systems?
Yes, CB/T4303 is a Chinese national standard for marine valves, but its dimensional and pressure ratings are often designed to be compatible with common international standards like ANSI/ASME, JIS, or DIN, especially for flanged connections. Specific compatibility should be verified based on your project requirements. -
Can I request a custom material grade or seal type?
Absolutely. As a manufacturer, we offer customization. You can request specific stainless steel grades (like 316L for enhanced chloride resistance) or alternative seal materials (Viton, HNBR, etc.) suitable for your specific media and operating temperature. -
What is the typical lead time for an order?
Lead times vary based on specification, quantity, and current production schedule. Standard configurations typically have shorter lead times. We provide estimated lead times upon receipt of your detailed inquiry or purchase order. -
Do you provide test reports or certifications with the valves?
Standard factory tests (such as shell test and seat test) are conducted. Relevant test reports can be provided upon request. We are ISO9001 certified, which governs our quality management system. -
How do I select the right size and pressure rating?
You need to know your pipeline's nominal diameter (DN) and the required pressure class (PN). Consider the maximum working pressure and temperature of your system. Our technical team can assist you in selection based on your provided parameters. -
Are spare parts like seal rings available for future maintenance?
Yes, we supply genuine spare parts, including seal rings, gaskets, and springs, to ensure optimal performance during the valve's lifecycle. -
What are the packaging and shipping terms?
Valves are typically packaged in wooden cases or pallets for export protection. We ship FOB from major Chinese ports like Shanghai, Guangzhou, Hong Kong, or Beijing, but other Incoterms can be negotiated.
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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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