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Help CenterMarine Wafer Check Valve With Spring Loaded Disc, Cast Steel Body, PN2.5MPa, DN100-400
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Shanghai Zhibang Valve Manufacture Co., Ltd., established in 2016, is a professional manufacturer dedicated to producing high-quality valve solutions for global markets. With an annual export value of US$1 million to US$1.5 million, we serve clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. Our Marine Wafer Check Valve with Spring Loaded Disc, Cast Steel Body, PN2.5MPa, DN100-400 is a reliable and durable product specifically designed for demanding marine and industrial applications. The spring-loaded disc ensures rapid response and prevents backflow efficiently, while the cast steel body offers excellent strength and corrosion resistance.
This check valve is engineered to meet the rigorous requirements of shipbuilding, offshore platforms, water treatment, and petrochemical systems. Its wafer-style design allows for easy installation between flanges, saving space and reducing weight. The spring-loaded mechanism provides positive sealing even under low flow conditions, making it suitable for vertical or horizontal piping systems. Available in sizes from DN100 to DN400, with a pressure rating of PN2.5MPa, this valve can handle a wide range of operating conditions.
Key Features & Benefits:
- Spring-Loaded Disc: Ensures quick closing action, minimizing water hammer and preventing reverse flow.
- Cast Steel Body: Provides high mechanical strength and durability, resistant to seawater and corrosive environments.
- Wafer Design: Compact and lightweight, fits between standard flanges without additional supports.
- Wide Size Range (DN100-400): Suitable for various pipeline diameters, offering flexibility for different projects.
- Pressure Rating PN2.5MPa: Suitable for medium-pressure applications in marine and industrial systems.
- Low Pressure Drop: Streamlined flow path reduces energy loss and improves system efficiency.
- Easy Maintenance: Simple construction allows for quick inspection and part replacement.
Technical Specifications:
| Parameter | Value |
| Body Material | Cast Steel (WCB / LCB / CF8M available) |
| Disc Material | Stainless Steel with spring |
| Pressure Rating | PN2.5MPa (Class 150 / 300 optional) |
| Size Range | DN100 – DN400 (4" – 16") |
| Connection | Wafer between flanges (ASME B16.5 / EN 1092) |
| Operating Temperature | -20°C to +120°C (customizable) |
| Applicable Media | Water, seawater, oil, gas, and other non-aggressive fluids |
Why Choose Shanghai Zhibang Valve?
- Established in 2016, with an annual export value exceeding US$1 million, we have proven experience in international trade.
- Our factory is ISO9001 certified, ensuring strict quality control from raw material to final testing.
- Main markets include North America, Europe, Southeast Asia, Africa, and Oceania, reflecting global acceptance of our products.
- We offer customization options such as different disc materials, coatings, and end connections to meet specific project needs.
- Convenient shipping from Shanghai, Guangzhou, Hong Kong, or Beijing ports ensures timely delivery worldwide.
We understand the critical nature of marine applications. Our wafer check valves undergo rigorous hydrostatic and leak tests to ensure zero backflow. The spring-loaded disc design reduces wear and extends service life, even in frequent cycling conditions. With a compact footprint and easy installation, this valve is an ideal choice for new constructions and retrofit projects.
Frequently Asked Questions (FAQ)
-
Q: What is the main advantage of a spring-loaded disc compared to a swing check valve?
A: The spring-loaded disc provides faster closing action, reducing water hammer and preventing reverse flow even at low flow rates. It also allows installation in any orientation (vertical or horizontal). -
Q: Can this valve be used for seawater applications?
A: Yes, the cast steel body can be coated or lined for corrosion resistance. Stainless steel disc and spring are standard. For more aggressive environments, optional materials like duplex stainless steel are available upon request. -
Q: What pressure and temperature ranges can this valve handle?
A: The standard pressure rating is PN2.5MPa (approx. 363 psi). Operating temperature range is -20°C to +120°C. Higher temperature options up to 200°C can be customized. -
Q: Is the valve suitable for both liquid and gas media?
A: Yes, it is designed for liquids, gases, and multiphase fluids. However, for compressible gases at high velocities, please consult our engineers for proper sizing. -
Q: What face-to-face dimensions are used?
A: The wafer type check valve follows standard dimensions such as API 594 or EN 558 series. We can provide specific dimensions based on the required standard. -
Q: Do you offer end connections other than wafer?
A: Standard is wafer type. Flanged ends or lug type are available as custom options. Please inquire for details. -
Q: What quality tests are performed on each valve?
A: Each valve undergoes hydrostatic shell test (1.5x rated pressure), seat leak test (1.1x rated pressure), and spring function test. Test reports are provided upon request. -
Q: How long is the delivery time for standard sizes?
A: For stock sizes (DN150-300), delivery is typically 15-20 days after order. Custom sizes or special materials may require 25-40 days.
With our ISO9001-certified facility and dedicated team, we are committed to providing reliable products and excellent service. We invite you to contact us for more details, custom solutions, or a competitive quotation. Let Shanghai Zhibang Valve be your trusted partner in marine and industrial fluid control.
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