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Home > Industrial Equipment & Components > Valve > Check Valve > Zhibang Valve Ductile Iron Marine Check Valve DN50-DN300 PN1.0-1.6MPa Flanged Epoxy Coated BV Certified
Zhibang Valve Ductile Iron Marine Check Valve DN50-DN300 PN1.0-1.6MPa Flanged Epoxy Coated BV Certified
Product Spotlights
Zhibang Ductile Iron Marine Check Valve features BV certification, epoxy coating, and flanged connections for corrosion-resistant, leak-proof operation in DN50–DN300, PN1.0–1.6MPa systems. Ideal for seawater, ballast, and cooling water lines. Factory-direct quality with ISO9001 management.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Material:
Other, Ductile Iron
Application:
Other, Marine
Standard:
Other, ISO9001 (Company Quality System)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Material
Other, Ductile Iron
Application
Other, Marine
Standard
Other, ISO9001 (Company Quality System)
size_range
DN50 - DN300
pressure_rating
PN1.0 - PN1.6 MPa
connection_type
Flanged
coating
Epoxy Coated
certification
BV Certified
Shanghai Zhibang Valve Manufacture Co., Ltd. has been a dedicated manufacturer of industrial valves since 2016. Our Zhibang Valve Ductile Iron Marine Check Valve series (DN50–DN300, PN1.0–1.6 MPa) is engineered specifically to meet the rigorous demands of marine and offshore applications. With a solid track record of exporting to over 15 global markets and annual export values exceeding US$1 million, we bring reliability and performance to every valve we produce. The flanged, epoxy-coated design combined with BV certification ensures that our check valve delivers corrosion resistance, long service life, and leak-proof operation in the harshest seawater environments.
Key Features & Technical Specifications
- Ductile Iron Body – High strength and impact resistance, suitable for high-pressure marine pipelines.
- Flanged End Connections – Conforms to international flanging standards (e.g., EN 1092, ASME B16.5) for easy installation and leak-proof joints.
- Epoxy Coating (Internal & External) – Thick, fusion-bonded epoxy layer provides excellent protection against seawater corrosion and chemical attack.
- BV Certification – Type-approved by Bureau Veritas, confirming compliance with marine classification rules for safety and reliability.
- DN50 to DN300 Size Range – Covers a wide variety of pipeline diameters, suitable for main and auxiliary systems on ships.
- PN1.0–1.6 MPa Pressure Rating – Designed for low to medium pressure seawater, freshwater, and ballast systems.
- Compact & Lightweight Design – Compared to cast iron or steel counterparts, ductile iron reduces weight and handling costs.
- Low Pressure Drop – Optimized flow passage minimizes resistance and energy loss.
Detailed Technical Parameters
| Parameter | Value |
|---|---|
| Body Material | Ductile Iron (GGG40 / GGG50 equivalent) |
| Disc Material | Ductile Iron with stainless steel pin |
| Seat Material | EPDM / NBR (optional) |
| Coating | Epoxy, ≥250μm (optional thickness available) |
| Working Pressure | PN10 (1.0 MPa) / PN16 (1.6 MPa) |
| Temperature Range | -10°C to +80°C (standard), higher on request |
| Flange Standard | EN 1092-2, DIN 2501, BS 4504, JIS B2212 (customizable) |
| Certification | BV (Bureau Veritas), ISO9001 (Company) |
Why Choose Zhibang Marine Check Valve?
- Superior Corrosion Resistance – Epoxy coating tested for salt spray > 1000 hours.
- Reliable Non-Return Function – Gravity-assisted disc closure prevents backflow instantly.
- Easy Maintenance – Simple flange design allows quick inspection and replacement.
- Global Compliance – BV type approval ensures acceptance by most classification societies and shipyards.
- Customizable Options – Different seat elastomers, coating colors, and flange drilling patterns available upon request.
Trust & Credibility
With our headquarters in Shanghai, China, and shipping ports including Shanghai, Guangzhou, Hong Kong, and Beijing, Shanghai Zhibang Valve Manufacture Co., Ltd. offers a complete supply chain solution. Our products have been delivered to shipbuilders and marine maintenance facilities across North America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We operate under a strict ISO9001 quality management system, and each check valve is individually pressure-tested before shipment. Our annual export revenue of US$1–1.5 million reflects the consistent satisfaction of our global customers. When you choose Zhibang, you invest in a valve built to last in the most demanding marine conditions.
Frequently Asked Questions
-
Q: What is the difference between PN10 and PN16 versions?
A: The PN16 version uses a thicker body and higher-grade bolts to handle 1.6 MPa maximum working pressure, while PN10 is rated for 1.0 MPa. Both share the same face-to-face dimensions. -
Q: Is the epoxy coating suitable for potable water?
A: Yes, our standard epoxy coating is non-toxic and complies with drinking water regulations. For specific potable water certifications, please contact us. -
Q: Can I get a valve with a different flange standard?
A: Certainly. We offer flanges according to ANSI, JIS, and GOST standards as optional. Please specify your requirement when ordering. -
Q: How long is the lead time for a typical order?
A: For standard sizes (DN50–DN200), lead time is usually 15–20 working days. Larger sizes or customized orders may require 25–35 days. -
Q: Does the valve come with mounting accessories?
A: Each valve is supplied with gaskets and bolts for flanged connections. Additional accessories like lifting lugs or position indicators can be added on request. -
Q: What is the warranty period?
A: We provide a standard 12-month warranty from the date of shipment, covering manufacturing defects. Extended warranty is negotiable. -
Q: How do I install the check valve correctly?
A: Install the valve with the arrow on the body pointing in the direction of flow. Ensure the pipeline is aligned and tighten bolts evenly to the recommended torque. -
Q: Can the valve be used in horizontal or vertical piping?
A: Yes, our spring-assisted check valve (optional) can be installed in any orientation. For the standard gravity type, horizontal installation is preferred.
Contact Zhibang Today – Benefit from our years of marine valve manufacturing experience. Request a quote or technical datasheet for your next project. We look forward to serving you from our Shanghai facility.
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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