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CB/T4303 Marine Steam Check Valve With Mill Test Report, DN150 Size
Product Spotlights
CB/T 4303 compliant marine steam check valve in DN150 size. Ensures safe, unidirectional steam flow to protect shipboard systems. Features robust cast steel/stainless steel construction for durability. Each valve includes a Mill Test Report for full material traceability and quality verification. Manufactured under ISO9001 by an experienced exporter serving global maritime markets.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine Steam Systems
Product Type:
Marine Steam Check Valve
Size (DN):
DN150
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine Steam Systems
Product Type
Marine Steam Check Valve
Size (DN)
DN150
Connection Standard
CB/T 4303
Material (Body)
Cast Steel or Ductile Iron
Seat Material
Stainless Steel
Pressure Rating
Standard Marine Pressure Class
Test Report
Mill Test Report Provided
Operation
Automatic, Non-Return Function
As a specialized manufacturer with a focus on marine fluid control solutions, Shanghai Zhibang Valve Manufacture Co., Ltd. proudly presents our CB/T4303 Marine Steam Check Valve in DN150 size. Engineered for reliability in demanding shipboard environments, this valve is a critical component for ensuring the safe and unidirectional flow of steam within marine piping systems. Our commitment to quality, underscored by our ISO9001 certification, is embedded in every valve we produce, providing shipbuilders, repair yards, and marine equipment suppliers with a dependable and compliant solution. The inclusion of a comprehensive Mill Test Report with each unit offers full traceability and verifies the material integrity and manufacturing quality, giving you complete confidence in your procurement.
This valve is specifically designed to prevent the reverse flow of steam, protecting boilers, turbines, and other upstream equipment from potential damage caused by backflow. Its robust construction and adherence to the CB/T 4303 marine standard make it a suitable choice for various applications onboard vessels.
Key Features and Technical Advantages:
- Marine-Specific Design: Manufactured in compliance with the CB/T 4303 standard, ensuring suitability for marine service conditions including vibration, thermal cycling, and corrosive atmospheres.
- Reliable Non-Return Action: Features a swift and positive closing mechanism that automatically seals upon flow cessation or reversal, safeguarding critical steam system components.
- Durable Construction: The valve body is typically crafted from high-grade cast steel or ductile iron, offering excellent strength and pressure resistance. The seating surface often utilizes stainless steel for enhanced wear resistance and longevity under high-temperature steam flow.
- DN150 Size Compatibility: The 150mm nominal diameter (DN150) is a common size for main steam branch lines and auxiliary systems, ensuring broad applicability across different vessel types and systems.
- Full Documentation Support: Each valve is accompanied by a Mill Test Report (MTR), which documents chemical composition, mechanical properties, and non-destructive testing results for the primary materials, fulfilling quality assurance requirements for marine projects.
- Low Maintenance Profile: Designed for simplicity and reliability, requiring minimal intervention over its service life, which reduces total cost of ownership for ship operators.
Primary Technical Specifications:
| Parameter | Specification / Detail |
| Product Standard | CB/T 4303 |
| Nominal Size | DN150 |
| Type | Swing Check Valve (Typical for Steam) |
| Connection Type | Flanged (as per standard), other ends available upon request |
| Pressure Class | Standard marine pressure ratings (e.g., PN16, PN25). Specific class customizable. |
| Body Material | Cast Steel (WCB), Ductile Iron, other grades available |
| Seat/Disc Material | Stainless Steel (e.g., 13% Cr, 304, 316) is common |
| Gasket Material | Graphite, Spiral Wound, options available for different temperatures |
| Testing | Shell Test, Seat Test per applicable standards. Reports provided. |
Benefits for Your Marine Projects:
- Enhanced System Safety: Prevents dangerous steam backflow, protecting expensive equipment and ensuring operational safety.
- Regulatory Compliance: Adherence to CB/T 4303 helps meet classification society and maritime regulatory requirements for vessel construction and repair.
- Streamlined Procurement & Inspection: The provided Mill Test Report simplifies material verification processes for shipyards and quality inspectors, saving time and administrative effort.
- Global Supply Chain Support: With annual export values reflecting consistent international trade and major shipment ports like Shanghai and Guangzhou, we are equipped to reliably supply global marine markets including North America, Europe, and Southeast Asia.
- Manufacturer Direct Value: Dealing directly with the factory allows for better technical support, potential customization, and competitive pricing.
Choosing Shanghai Zhibang as your valve supplier means partnering with an established manufacturer with nearly a decade of experience since 2016. Our proven track record in exporting to diverse markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and Europe demonstrates our product's acceptance and reliability worldwide. The ISO9001 certification governing our production processes is your assurance of a systematic approach to quality control. We understand the critical nature of marine components, and our CB/T4303 DN150 Steam Check Valve, delivered with full material certification, is built to perform under pressure and contribute to the longevity of your vessel's steam systems. Contact us today to discuss your specific requirements, request a detailed quotation, or learn more about our full range of marine valves.
Frequently Asked Questions (FAQ)
-
Q: What is the significance of the CB/T 4303 standard for this valve?
A: CB/T 4303 is a Chinese national professional standard specifically for marine valves. It outlines design, material, manufacturing, testing, and marking requirements to ensure the valve is fit for purpose in the marine environment, addressing factors like corrosion and operational stresses unique to ships. -
Q: Is the Mill Test Report (MTR) provided for the entire valve or just materials?
A: The Mill Test Report typically covers the raw materials used for the major pressure-containing parts, such as the valve body, bonnet, and disc. It certifies the material's chemical and mechanical properties against specified standards, which is a standard and crucial requirement in marine procurement. -
Q: Can this DN150 valve be used with other media besides steam?
A: While designed for steam service, its construction may be suitable for other hot water or non-aggressive fluid applications. However, material compatibility and pressure-temperature ratings must be confirmed for the specific service. Please consult with our technical team for alternative applications. -
Q: What are the standard pressure ratings available for this valve?
A: Common marine pressure classes like PN16 or PN25 are standard offerings. We can manufacture valves to other specific pressure classes (e.g., ANSI 150) based on your project requirements and the applicable piping specification. -
Q: What is the typical lead time for an order of these valves?
A: Lead time depends on order quantity and current production schedule. For standard DN150 CB/T4303 check valves, we generally maintain efficient production cycles. Contact our sales team with your required quantity for an accurate delivery estimate. -
Q: Do you offer different flange face finishes or standards?
A: Yes. While supplied as per the CB/T standard, we can accommodate other flange standards (e.g., JIS, ANSI) or face finishes (RF, FF) upon request. Please specify your connection requirements when inquiring. -
Q: How does your company ensure quality control during manufacturing?
A: Our ISO9001 certified quality management system governs all processes from material sourcing to final testing. Each production batch undergoes rigorous inspections, including dimensional checks, pressure tests (shell and seat), and visual examination, with records maintained for traceability. -
Q: What packaging is used for export shipment to prevent damage?
A: Valves are typically prepared for export with rust preventative, individually wrapped, and securely packed in wooden crates or strong plywood boxes to withstand handling during sea freight from ports like Shanghai or Guangzhou.
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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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