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Home > Industrial Equipment & Components > Valve > Butterfly Valve > Cast Steel Butterfly Check Valve DN200 PN3.0MPa Compliant With CB/T4303 Marine Standard
Cast Steel Butterfly Check Valve DN200 PN3.0MPa Compliant With CB/T4303 Marine Standard
Product Spotlights
Marine-grade cast steel butterfly check valve compliant with CB/T4303 standard. Features DN200 size and PN3.0MPa pressure rating for robust performance. Combines compact butterfly design with non-slam check function to prevent backflow and water hammer. Ideal for space-saving installations in marine, offshore, and industrial piping systems. Offers durable construction with customizable material options.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Marine
Material:
Cast Steel
Valve Type:
Butterfly Check Valve
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Marine
Material
Cast Steel
Valve Type
Butterfly Check Valve
Nominal Diameter (DN)
200
Pressure Rating (PN)
3.0 MPa
Compliance Standard
CB/T4303 Marine Standard
Connection Type
Wafer or Lug (Optional)
Seat Material
EPDM, NBR, or PTFE (Optional)
Disc Material
Stainless Steel or Coated
Operation
Automatic, Non-Slam Check Function
As a professional manufacturer with a strong foundation since 2016, Shanghai Zhibang Valve Manufacture Co., Ltd. specializes in delivering high-performance industrial valves for demanding global applications. Our Cast Steel Butterfly Check Valve, DN200 PN3.0MPa, is engineered specifically to meet the rigorous CB/T4303 Marine Standard, offering a reliable and compact solution for critical flow control and backflow prevention in marine, offshore, and heavy industrial systems. This valve combines the efficiency of a butterfly valve with the essential safety function of a check valve, providing superior performance where space is limited and reliability is non-negotiable. With our ISO9001-certified manufacturing processes and a proven export track record serving markets from North America to Southeast Asia, we ensure every valve meets stringent quality and durability standards.
This valve is designed for one-way flow control, automatically closing to prevent reverse flow when upstream pressure drops, protecting pumps, compressors, and other equipment from damage. Its cast steel construction provides excellent strength and corrosion resistance for harsh environments.
Key Features & Technical Advantages:
- Dual-Function Design: Integrates the shut-off capability of a butterfly valve with the non-return function of a check valve, saving space and installation costs compared to using two separate valves.
- Marine-Grade Compliance: Manufactured in full compliance with the CB/T4303 standard, ensuring suitability for shipboard piping systems, offshore platforms, and other marine applications where safety and reliability are critical.
- Non-Slam, Low Torque Operation: The disc design and spring-assisted closure mechanism minimize water hammer and slamming during closure, reducing stress on the piping system and enabling smoother operation with lower operating torque.
- Robust Construction: The main body is crafted from high-quality cast steel (WCB, LCB, etc., available upon request), offering high tensile strength and good resistance to corrosion and erosion.
- Versatile Sealing Options: Available with various seat materials like EPDM for general water service, NBR for oil applications, or PTFE for chemical and high-temperature services, ensuring a tight seal and long service life.
- Compact & Lightweight: The wafer or lug design provides a significant space and weight saving over traditional swing check or globe check valves, making it ideal for retrofit projects and space-constrained installations.
- Bidirectional Pressure Capability: Certain models can be designed to withstand pressure from both flow directions, adding an extra layer of safety for complex system layouts.
Technical Specifications Table:
| Parameter | Specification |
| Product Type | Butterfly Check Valve (Non-Slam Type) |
| Nominal Diameter (DN) | 200 |
| Pressure Rating (PN) | 3.0 MPa (Class 300 equivalent) |
| Body Material | Cast Steel (Standard: WCB. LCC, LC3, WC6 available) |
| Disc Material | Stainless Steel (CF8/304, CF8M/316) or Coated Carbon Steel |
| Seat Material | EPDM (Standard), NBR, PTFE, or FKM (Customizable) |
| Connection Standard | Face-to-Face per API 609/EN 593; Flange drilling per ANSI B16.10, JIS, DIN |
| Operating Temperature | -20°C to +150°C (varies with seat material, PTFE allows higher) |
| Applicable Fluid | Water, Sea Water, Oil, Gas, Steam, Weak Corrosive Media |
Benefits for Your Project:
- Enhanced System Protection: Prevents reverse flow effectively, safeguarding expensive pumps and equipment from catastrophic failure, reducing downtime and maintenance costs.
- Optimized Space Utilization: Its compact design allows for installation in tight spaces or where piping runs are close together, offering greater design flexibility for engineers.
- Reduced Lifecycle Cost: Durable construction and reliable performance lead to fewer replacements and lower maintenance requirements over the valve's lifespan.
- Simplified Installation & Inventory: The wafer-style design is installed between flanges, requiring fewer bolts and gaskets than conventional valves, speeding up installation and reducing parts inventory.
- Global Supply Chain Support: With major shipment ports in Shanghai, Guangzhou, Hong Kong, and Beijing, we ensure timely and efficient delivery to your project site anywhere in the world.
Choosing Shanghai Zhibang's Cast Steel Butterfly Check Valve means partnering with a manufacturer that combines nearly a decade of specialized experience with a commitment to international quality standards. Our annual export volume demonstrates consistent trust from clients across diverse regions, including North America, Europe, and Southeast Asia. This specific valve, built to the exacting CB/T4303 marine standard, is a testament to our capability to serve critical industries. We invite you to contact us for detailed quotations, technical drawings, or to discuss custom requirements. Let our reliable valve solutions contribute to the safety and efficiency of your next marine or industrial project.
Frequently Asked Questions (FAQ):
-
Q: What is the main difference between this butterfly check valve and a traditional swing check valve?
A: The primary difference lies in design and operation. Our butterfly check valve has a disc that rotates on a central shaft, closing with a spring assist for a non-slam action. It is much more compact and lighter than a swing check valve, which has a hinged disc that swings open/closed and can cause water hammer. -
Q: Can this valve be used for vertical pipe installation?
A: Yes, it can be installed in both horizontal and vertical pipelines. For vertical installation, the flow direction must be upward, and specific orientation guidelines should be followed to ensure proper disc closure by gravity and spring force. -
Q: Is the valve suitable for seawater applications?
A: Absolutely. When specified with appropriate materials such as cast steel ASTM A216 WCB with suitable internal coatings or stainless steel components (e.g., 316 SS disc), and a seawater-resistant seat like EPDM or PTFE, it is well-suited for seawater service as per marine standards. -
Q: What is the cracking pressure for this valve?
A: The cracking pressure (the minimum upstream pressure required to open the valve) is typically low, often in the range of 0.05 to 0.1 bar, depending on the spring setting. This can be adjusted or customized based on specific system requirements. -
Q: Do you offer actuators for this check valve?
A: This is primarily an automatic check valve. However, if you require a valve that can also be operated manually or automatically for isolation (acting as a regular butterfly valve), we can provide a similar model with a lever, gearbox, or pneumatic/electric actuator upon request. -
Q: What flange standards are available?
A: We can manufacture valves with flanges drilled to match common international standards, including ANSI B16.5 (Class 150/300), DIN, JIS, and BS. Please specify your required flange standard when inquiring. -
Q: What is the typical delivery time for an order of DN200 valves?
A: For standard configurations, the delivery time is generally 30-45 days after order confirmation. This can vary based on order quantity, specific material choices, and current production schedule. Expedited options may be available. -
Q: How do I determine the correct seat material for my application?
A: The seat material depends on the fluid media, temperature, and pressure. EPDM is common for water up to 120°C, NBR for oils, and PTFE for chemicals or higher temperatures. Our technical team can assist you in selecting the optimal material based on your operating conditions.
Send Inquiry to This Supplier
1Yr
Business Type
Manufacturer
Year Established
2016
Annual Export Value
US$1 Million - US$1.5 Million
Product Certifications
ISO9001
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