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Home > Industrial Equipment & Components > Valve > Check Valve > Dual Plate Check Valve for Oil Line DN80-DN300 Wafer Connection PN25 Cast Steel Body NBR Seal
Dual Plate Check Valve for Oil Line DN80-DN300 Wafer Connection PN25 Cast Steel Body NBR Seal
Product Spotlights
DN80-DN300 dual plate check valve, cast steel body, NBR seal, PN25 wafer connection for oil lines. Compact, low pressure drop, quick closing. ISO9001 certified, global export experience, customizable. Reliable backflow prevention from Shanghai Zhibang Valve.
Negotiable
MOQ: 1 Unit (Price negotiable depending on order volume and customization)
Key Specifications
Get Latest Price
Size Range:
DN80 – DN300
Connection Type:
Wafer (between flanges)
Pressure Rating:
PN25 (25 bar)
Payment & Shipping
Payment Methods:
Port of Shipment:
China
Delivery Detail:
Delivery time depends on order quantity.
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Size Range
DN80 – DN300
Connection Type
Wafer (between flanges)
Pressure Rating
PN25 (25 bar)
Body Material
Cast Steel (WCB / WCC)
Seal Material
NBR (Nitrile Butadiene Rubber)
Application Medium
Oil, Petroleum Products
Design Standard
API 594 / EN 593 (upon request)
Certification
ISO9001:2015
Temperature Range
-20°C to +80°C (NBR seal)
Shanghai Zhibang Valve Manufacture Co., Ltd. is a professional manufacturer dedicated to delivering high-performance industrial valves. Our Dual Plate Check Valve for Oil Line (DN80–DN300, wafer connection, PN25) is engineered to provide reliable backflow prevention in oil transportation systems. Featuring a rugged cast steel body and NBR seat seals, this valve ensures leak‑tight closure, minimal pressure drop, and long service life even under demanding conditions. Trust Zhibang Valve for cost‑effective and durable solutions tailored to your pipeline needs.
Below is a detailed overview of the product’s technical specifications and key benefits. All performance parameters are verified under our ISO9001 quality management system.
| Parameter | Specification |
| Size Range | DN80 – DN300 (3" – 12") |
| Nominal Pressure | PN25 (25 bar / 362 psi) |
| Body Material | Cast Steel (ASTM A216 WCB / WCC optional) |
| Seal Material | NBR (Nitrile Rubber), suitable for oil |
| Temperature Range | -20°C to +80°C (-4°F to 176°F) |
| Connection | Wafer type, fits between flanges |
| Applicable Medium | Oil, petroleum products, water‑oil mixtures |
| Operating Standard | API 594 / EN 593 (available upon request) |
Product Features & Benefits
- Dual Plate Design – Two spring‑loaded plates close quickly, reducing water hammer and protecting downstream equipment.
- Wafer Connection – Compact, lightweight construction saves space and reduces installation cost compared to lug or flanged types.
- Cast Steel Body – High strength and corrosion resistance, ideal for high‑pressure oil pipelines.
- NBR Seal – Excellent oil resistance and tight sealing even after repeated cycles.
- Low Pressure Drop – Streamlined flow path minimizes energy loss, maintaining system efficiency.
- Full Port or Reduced Port Options – Customizable to match pipe ID for optimal flow.
- ISO9001 Quality Control – Every valve is pressure‑tested and inspected before shipment.
- Easy Maintenance – Simple design allows quick seal replacement without removing the valve from the line.
Applications
This dual plate check valve is specifically designed for oil transportation lines, refinery systems, fuel handling, and petrochemical plants. It can also be used for water, gas, and other non‑aggressive media with appropriate seal selection.
Why Choose Shanghai Zhibang Valve?
- Established in 2016, we are a dedicated manufacturer with in‑house casting and machining capabilities.
- Annual export value reaches US$1 million – US$1.5 million, serving markets across North America, Europe, Southeast Asia, Africa, and Oceania.
- We hold ISO9001 certification, ensuring consistent quality and traceability.
- Flexible shipping ports: Shanghai, Guangzhou, Hong Kong, Beijing for global delivery.
Invest in reliable backflow prevention for your oil lines. Our dual plate check valves combine robust construction with competitive pricing. Contact our sales team today for a quotation or technical consultation. We welcome OEM/ODM requirements and custom pressure ratings.
Frequently Asked Questions
- Q: Can this valve be used for crude oil or only refined products? A: Yes, the NBR seal is suitable for both crude and refined oil. For high‑temperature or sour service, optional seals like FPM or PTFE are available.
- Q: What is the maximum working pressure? A: The valve is rated PN25 (25 bar). Higher pressure classes such as PN40 can be manufactured upon request.
- Q: Do you provide flanges or gaskets? A: The valve is wafer‑type; flanges and gaskets are not included. Standard wafer gaskets are recommended for installation.
- Q: What is the delivery lead time? A: For standard sizes (DN80–DN300), lead time is 15–25 working days after order confirmation. Custom orders may require 30–40 days.
- Q: Is the valve suitable for vertical pipelines? A: Yes, the dual plate check valve can be installed in both horizontal and vertical upward flow lines. Spring force ensures proper closing in any orientation.
- Q: What certificates do you provide? A: We provide ISO9001 certification, material test certificates, pressure test reports, and a warranty document. Third‑party inspection (e.g., SGS, BV) is welcome at extra cost.
- Q: Can I get a sample valve before bulk order? A: Yes, sample orders are accepted. Sample cost is negotiable, and we can deduct it from the first mass production.
- Q: How do you ensure seal longevity in oil service? A: NBR is inherently oil‑resistant. We also apply anti‑extrusion rings and precise tolerance control to extend seal life under continuous operation.
Contact Information
Shanghai Zhibang Valve Manufacture Co., Ltd.
Website: (example)
Email: sales@zhibangvalve.com (example)
Tel: +86-21-XXXXXXXX
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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