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Home > Industrial Equipment & Components > Valve > Check Valve > Flanged Dual Plate Check Valve DN50-DN300 PN16-PN40 NBR Seal for Ship Fuel Oil Lines
Flanged Dual Plate Check Valve DN50-DN300 PN16-PN40 NBR Seal for Ship Fuel Oil Lines
Product Spotlights
Flanged dual plate check valve DN50-DN300 with NBR seal, engineered for ship fuel oil lines. Compact, lightweight, spring-assisted closure prevents water hammer. ISO9001 certified, customizable materials and flange standards. Ideal for marine piping systems.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Application:
Other, Ship fuel oil lines
Standard:
Other, ISO9001 certified
Size Range:
DN50 to DN300
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Application
Other, Ship fuel oil lines
Standard
Other, ISO9001 certified
Size Range
DN50 to DN300
Pressure Rating
PN16 / PN25 / PN40
Seal Material
NBR (Nitrile Butadiene Rubber)
Connection Type
Flanged (RF / FF)
Body Material
Ductile Iron / Cast Steel / Stainless Steel (optional)
Disc Material
Stainless Steel / Duplex (optional)
Operation Type
Automatic (spring-assisted closure)
Installation Orientation
Horizontal or vertical (depending on model)
Shanghai Zhibang Valve Manufacture Co., Ltd, established in 2016, is a professional manufacturer specializing in high-performance industrial valves. Our Flanged Dual Plate Check Valve DN50-DN300 PN16-PN40 with NBR Seal is specifically engineered for demanding marine fuel oil lines, offering reliable backflow prevention and exceptional durability. With annual export value between US$1 Million and US$1.5 Million, our products have been trusted by customers across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and more. This check valve combines compact design with robust construction, ensuring minimal pressure loss and long service life even in harsh shipboard environments.
Product Features & Technical Specifications
- Dual Plate Design: Spring-assisted dual discs provide rapid closure, minimizing water hammer and protecting downstream equipment.
- Flanged Connections: Available with raised face (RF) or flat face (FF) flanges to PN16/PN25/PN40 standards, compatible with ship piping systems.
- NBR Seal: Nitrile rubber seal offers excellent oil resistance, suitable for fuel oil, diesel, and lubricating oil applications.
- Wide Size Range: From DN50 to DN300, covering most common marine pipeline diameters.
- Material Options: Body materials include ductile iron, cast steel, or stainless steel; disc materials available in stainless steel or duplex for enhanced corrosion resistance (optional).
- Compact & Lightweight: 30-50% shorter face-to-face length compared to traditional swing check valves, saving space in tight ship compartments.
| Parameter | Specification |
|---|---|
| Size Range | DN50 – DN300 (2″ – 12″) |
| Pressure Rating | PN16 / PN25 / PN40 |
| Seal Material | NBR (Nitrile) |
| Body Material | Ductile Iron / Cast Steel / Stainless Steel (optional) |
| Disc Material | Stainless Steel / Duplex (optional) |
| Face-to-Face | EN 558 / API 594 / ISO 5752 |
| Flange Standard | DIN / ANSI / JIS (customizable) |
| Temperature Range | -20°C to +80°C (NBR seal) |
Key Advantages for Ship Fuel Oil Lines:
- Reliable Sealing: The NBR seal maintains tight shut-off even at low back pressure, preventing fuel leakage.
- Reduced Maintenance: Non-slam mechanism and corrosion-resistant materials extend service intervals aboard vessels.
- Easy Installation: Flanged connections allow straightforward retrofitting into existing ship piping systems.
- Customization: Available in special materials (e.g., bronze, Monel) upon request for aggressive fuel compositions.
Trust & Reliability
Shanghai Zhibang Valve Manufacture Co., Ltd operates under a strict ISO9001 certified quality management system, ensuring consistent product performance and traceability. Our valves are shipped from major Chinese ports including Shanghai, Guangzhou, Hong Kong, and Beijing, with fast global logistics. With over 7 years of manufacturing experience and a dedicated R&D team, we have supplied thousands of dual plate check valves to shipbuilders, offshore platforms, and marine OEMs worldwide. We stand behind every valve with a comprehensive warranty and responsive after-sales support.
Contact us today for a quotation, technical drawing, or customization request. Let Shanghai Zhibang Valve be your trusted partner in marine fluid control.
Frequently Asked Questions (FAQ)
-
Q: What is the typical delivery time for DN150 PN16 flanged dual plate check valves?
A: For standard sizes like DN150, delivery is usually 15-20 working days after order confirmation. Custom material or special flange drilling may take 25-30 working days. -
Q: Can this valve be used for heavy fuel oil (HFO) lines?
A: Yes, the NBR seal is compatible with HFO, but we recommend verifying temperature and viscosity. For high-temperature HFO, optional EPDM or FKM seals can be provided. -
Q: Do you provide test certificates or material certificates?
A: Absolutely. We can supply material certificates (EN 10204 3.1), pressure test reports, and inspection records as per customer requirements. -
Q: Is the dual plate check valve suitable for vertical pipe installation?
A: Yes, our design allows installation in both horizontal and vertical (upward flow) pipelines. For vertical downflow, please consult our engineers. -
Q: What is the maximum working pressure for PN40 rated valves?
A: PN40 corresponds to 40 bar at ambient temperature. For higher temperatures, pressure rating derates according to material standards. -
Q: Can the valve be supplied with ANSI flanges instead of DIN?
A: Yes, we offer flanges per ANSI B16.5 (Class 150, 300, etc.) and JIS B2220 upon request. Flange drilling is customizable. -
Q: How do you ensure no water hammer occurs during disc closure?
A: The spring-assisted dual discs close rapidly before reverse flow develops. The closure speed can be adjusted via spring selection for different system conditions. -
Q: What warranty do you offer on this product?
A: We provide a standard 12-month warranty from shipment date, covering manufacturing defects. Extended warranty is available for bulk orders.
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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