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CB/T4303 Marine Check Valve for Steam Systems, Cast Steel Body & Metal Seal
Product Spotlights
CB/T4303 compliant marine check valve for steam systems. Features a durable cast steel body and reliable metal-to-metal seal for high-temperature, high-pressure backflow prevention. Enhances safety, reduces maintenance, and ensures long service life in harsh marine environments. Customizable pressure ratings, sizes, and connections available.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
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Application:
Other, Marine Steam Systems
Standard:
CB/T 4303
Material:
Cast Steel Body with Metal Seal
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
Standard
CB/T 4303
Material
Cast Steel Body with Metal Seal
Connection Type
Flanged (common), optional others
Pressure Rating
Customizable based on system requirements
Temperature Range
Suitable for high-temperature steam
Seal Type
Metal-to-metal seal
Operation
Automatic, non-return
Brand
Zhibang Valve
Customization
Available upon request
At Shanghai Zhibang Valve Manufacture Co., Ltd., a dedicated manufacturer established in 2016 with a strong commitment to quality certified by ISO9001, we specialize in producing reliable industrial valves for demanding applications. Our CB/T4303 Marine Check Valve for Steam Systems is engineered to provide dependable, automatic backflow prevention in critical marine steam lines. Designed with a robust cast steel body and a durable metal seal, this valve is built to withstand the harsh conditions of marine environments, ensuring operational safety and system integrity for our clients across North America, South America, Europe, Asia, Africa, and Oceania.
Core Features and Technical Advantages:
- Superior Construction: The valve body is manufactured from high-grade cast steel, offering excellent strength and resistance to corrosion and thermal stress, which is crucial for steam service.
- Reliable Metal Seal: Utilizes a precision metal-to-metal sealing mechanism. This design ensures a tight seal even under high-pressure, high-temperature steam conditions, minimizing leakage and enhancing longevity compared to soft-seat alternatives.
- Automatic Non-Return Operation: Functions automatically to allow fluid flow in one direction only. It closes swiftly and positively upon flow reversal, preventing backflow that could damage upstream equipment like boilers or pumps.
- Compliance with Marine Standards: Manufactured in accordance with the CB/T 4303 standard, which specifies requirements for marine valves, ensuring compatibility and reliability for shipboard installations.
- Versatile Application: Specifically designed for steam systems on various vessels, including cargo ships, tankers, and offshore platforms. It is suitable for main steam lines, auxiliary steam lines, and other piping where backflow prevention is critical.
- Customizable Configurations: We understand that system requirements vary. Therefore, parameters such as pressure class (e.g., PN16, PN25, Class 150, Class 300), end connection types (flanged is standard, but threaded or welded ends are available), and specific dimensions can be tailored upon request to match your piping specifications.
Key Technical Specifications:
The following table outlines typical specifications. Exact parameters are customizable based on your project requirements.
| Specification | Detail |
| Product Standard | CB/T 4303 |
| Body Material | Cast Steel (e.g., WCB, LCB) |
| Seal Material | Stainless Steel or other alloy metal |
| Connection Type | Flanged (RF, FF), others optional |
| Nominal Diameter (DN) | DN15 to DN500 (1/2" to 20") |
| Pressure Rating | PN10 to PN40, Class 150 to Class 300 |
| Suitable Medium | Saturated Steam, Superheated Steam |
| Operating Temperature | Up to 425°C (800°F) depending on material grade |
| Operation Mode | Automatic (Swing, Lift, or Tilting Disc type) |
Benefits for Your Operations:
- Enhanced System Safety: Prevents dangerous backflow in steam systems, protecting expensive boilers, turbines, and other critical components from potential water hammer or reverse flow damage.
- Reduced Maintenance & Downtime: The robust cast steel construction and metal seal are designed for durability, reducing the frequency of repairs or replacements and minimizing unplanned vessel downtime.
- Improved Operational Efficiency: Ensures steam flows in the intended direction, maintaining system pressure and efficiency. The swift closing action helps maintain stable system parameters.
- Long Service Life: Engineered for the harsh marine environment—resistant to vibration, corrosion, and thermal cycling—providing a long and reliable service life, which translates to a lower total cost of ownership.
- Global Supply Capability: With annual export values between US$1-1.5 Million and major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we have the logistics expertise to deliver our valves efficiently to your global projects, whether in Eastern Europe, Southeast Asia, or the Americas.
Choosing Zhibang Valve means partnering with a certified manufacturer whose quality management system meets ISO9001 standards. Our focus on precision engineering and understanding of global marine industry needs, evidenced by our presence in diverse markets from Northern Europe to Oceania, ensures that the CB/T4303 Marine Check Valve is a component you can trust. We are committed to providing not just a product, but a solution that enhances the safety and reliability of your marine steam systems. Contact us today to discuss your specific requirements or to request a detailed quotation. Let our expertise in valve manufacturing support the success of your maritime operations.
Frequently Asked Questions (FAQ):
-
Q: What is the main purpose of this check valve in a steam system?
A: Its primary function is to automatically prevent the reverse flow of steam or condensate. This protects upstream equipment like boilers from backflow, which can cause water hammer, efficiency loss, or equipment failure. -
Q: Why is a metal seal preferred over a soft seal (like rubber) for steam applications?
A: Metal seals can withstand much higher temperatures and pressures typical of steam systems without degrading. They offer superior durability and leak-tight performance over a longer lifespan in high-heat environments where soft seals would fail. -
Q: Can this valve be used with media other than steam?
A: While specifically designed for steam, its cast steel body and metal seal make it suitable for other high-temperature fluids, hot water, or certain oils. However, compatibility for specific media should be confirmed with our technical team based on the exact material grades. -
Q: How do I select the correct pressure rating (PN or Class) for my application?
A: The valve pressure rating must equal or exceed the maximum operating pressure of your steam system, including any potential surge pressures. Please provide your system's design pressure and temperature, and our engineers will recommend the appropriate class. -
Q: What types of end connections are available?
A> Flanged connections (RF or FF face) are the most common for marine piping. We also offer options for threaded (NPT) or butt-weld ends. The choice depends on your existing pipeline design. -
Q: Is the valve suitable for both vertical and horizontal pipe installation?
A: Most swing or tilting disc check valves have specific orientation requirements for proper operation. The installation orientation depends on the internal design. Please consult the product datasheet or our team for the recommended installation position for your selected model. -
Q: Do you provide customization for non-standard sizes or materials?
A: Yes, as a manufacturer, we offer customization services. This can include special sizes outside the standard range, alternative material grades for the body or seal (e.g., higher alloy steels), or specific coating requirements. These are available upon request. -
Q: What is the typical lead time for an order?
A> Lead time varies based on order quantity, specification complexity, and customization. For standard specifications, production is generally faster. We provide estimated lead times with every quotation to help you plan your project schedule.
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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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