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CB/T4303 Marine Bronze Wafer Check Valve With Mill Test Report
Product Spotlights
CB/T 4303 compliant Marine Bronze Wafer Check Valve designed for corrosive marine environments. Features a compact wafer design for easy installation between flanges, reducing weight and space. Manufactured from ASTM B61/B62 marine bronze for superior seawater corrosion resistance. Each valve includes a Mill Test Report (MTR) for full material traceability and quality assurance. Ideal for shipbuilding, offshore platforms, and industrial applications requiring reliable backflow prevention.
Negotiable
MOQ: 10 Units (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Marine Bronze (ASTM B61/B62)
Application:
Other, Marine
Standard:
Other, CB/T 4303, GB/T 12236
Payment & Shipping
Payment Methods:
Port of Shipment:
shanghai
Delivery Detail:
7 days
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Material
Other, Marine Bronze (ASTM B61/B62)
Application
Other, Marine
Standard
Other, CB/T 4303, GB/T 12236
Type
Wafer Style Check Valve
Size Range
DN15 to DN200 (1/2“ to 8“)
Pressure Rating
PN16/PN25/Class 150
End Connection
Wafer (between flanges)
Seat Seal
Metal-to-metal or optional soft seal
Test Report
Mill Test Report (MTR) Provided
As a specialized manufacturer with years of experience in fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T 4303 Marine Bronze Wafer Check Valve. Designed for demanding marine and industrial applications, this valve ensures reliable, unidirectional flow control, protecting critical systems from damaging backflow. Every valve is backed by a comprehensive Mill Test Report (MTR), providing full traceability and quality assurance from raw material to finished product. We combine robust construction with precise engineering to deliver a component you can trust for long-term, maintenance-free operation.
Our Marine Bronze Wafer Check Valve is engineered for performance and durability in corrosive environments. Key features and benefits include:
- Superior Corrosion Resistance: Manufactured from high-grade marine bronze (ASTM B61/B62), offering exceptional resistance to seawater, brackish water, and various industrial chemicals, making it ideal for shipboard piping systems, offshore platforms, and coastal installations.
- Compact & Lightweight Wafer Design: The wafer-style body installs conveniently between two pipeline flanges, significantly reducing weight and space requirements compared to flanged-end check valves. This design simplifies installation and lowers overall system costs.
- Reliable Non-Return Function: Features a swift-acting swing disc mechanism that opens with forward flow and closes automatically upon flow cessation or reversal, preventing backflow and water hammer effectively.
- Full Traceability with Mill Test Report: Each valve is supplied with a detailed MTR, certifying the chemical composition and mechanical properties of the bronze alloy. This documentation is crucial for quality audits, regulatory compliance, and project specifications.
- Robust Construction & Low Maintenance: The simple yet sturdy design minimizes moving parts, leading to high reliability and minimal need for maintenance even under continuous service.
Below are the typical technical specifications for our standard range:
| Parameter | Specification |
|---|---|
| Product Standard | CB/T 4303, GB/T 12236 |
| Body & Disc Material | Marine Bronze (CuZn39Pb3 / C83600) |
| Seat Seal | Standard: Metal-to-Metal; Optional: NBR, EPDM, FKM |
| Size Range (DN) | 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200 |
| Pressure Rating | PN16 (Standard), PN25, Class 150 |
| Temperature Range | -20°C to 200°C (depending on seat material) |
| End Connection | Wafer (RF flange facing standard) |
| Flow Direction | Horizontal or Vertical (flow bottom to top) |
Beyond the standard specs, this valve offers distinct advantages for your projects:
- Enhanced System Protection: Prevents reverse flow in pumps, compressors, and discharge lines, safeguarding equipment from damage and ensuring system efficiency.
- Cost-Effective Solution: The combination of durable materials and a low-maintenance design results in a lower total cost of ownership over the valve's lifespan.
- Versatile Application Scope: Suitable for a wide range of media including seawater, freshwater, lubricating oils, air, and non-aggressive chemicals in marine, power generation, and general industrial services.
- Easy Integration: The wafer design allows for quick installation between ANSI, DIN, JIS, or GB standard flanges, reducing labor time and installation complexity.
Established in 2016 and holding ISO9001 certification, Shanghai Zhibang Valve has built a solid reputation for quality and reliability. With an annual export value ranging between US$1 Million and US$1.5 Million, our products have gained the trust of clients across North America, South America, Europe, Asia, Africa, and Oceania. Our strategic location in Shanghai, with major ports of shipment including Shanghai, Guangzhou, Hong Kong, and Beijing, ensures efficient and flexible global logistics. When you choose our CB/T 4303 Marine Bronze Wafer Check Valve, you are not just buying a component; you are investing in a product backed by stringent manufacturing controls, proven performance, and a company committed to international standards. 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 wafer-style check valve over other types?
A: The primary advantage is its compact and lightweight design. It fits between two flanges without requiring additional bolting on the valve body itself, saving significant space and weight in the piping system compared to flanged-end check valves. -
Q: Is this valve suitable for vertical pipe installation?
A: Yes, it can be installed in vertical pipelines. For vertical installation, it is crucial to ensure the flow direction is from bottom to top to allow gravity to assist in closing the disc when flow stops. -
Q: What does the Mill Test Report (MTR) include, and why is it important?
A: The MTR provides certified data on the chemical composition (e.g., copper, tin, zinc, lead percentages) and mechanical properties (tensile strength, yield strength, hardness) of the bronze material used. It is vital for quality verification, material traceability, and meeting project specification or regulatory requirements. -
Q: Can this valve handle seawater applications?
A: Absolutely. The marine bronze alloy (ASTM B61/B62) is specifically formulated for excellent corrosion resistance in seawater and other saline environments, making it a standard choice for marine and offshore applications. -
Q: What pressure ratings are available?
A: Standard pressure rating is PN16. Higher ratings such as PN25 and Class 150 are available upon request. Please specify your operating pressure when inquiring. -
Q: Are different seat seal materials available?
A: Yes. The standard seat is metal-to-metal for general service. For tighter shut-off or different media, optional soft seals like NBR (for oil), EPDM (for hot water), or FKM/Viton (for chemicals) can be provided. -
Q: What are the main application areas for this valve?
A> Its primary applications are in marine systems (bilge, ballast, cooling, fire mains), offshore oil & gas platforms, coastal power plants, desalination plants, and general industrial piping where bronze is specified for its corrosion resistance. -
Q: Do you offer customization for non-standard sizes or specifications?
A: As a manufacturer, we have the capability to discuss customizations, including special sizes, pressure ratings, or material verifications. Please contact our technical sales team with your detailed requirements.
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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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