🔧 Product Overview:

This large diameter swing check valve is designed for industrial applications requiring high-capacity flow and reliable backflow prevention. Available with flanged or butt-weld (BW) ends, it features a swing-type disc and metal-to-metal sealing, making it ideal for oil, gas, water, steam, and chemical pipelines with large pipe diameters and moderate to high pressure.

✅ Key Features:

• Valve Type: Swing Check Valve (Non-return Valve)

• Size Range: DN400 – DN1200 (16" – 48")

• Pressure Rating: PN10 / PN16 / PN25 / ANSI Class 150 / 300 / 600

• Body Material: Carbon Steel (WCB) / Stainless Steel (CF8 / CF8M)

• Disc Type: Swing-type, Full Open Design

• Seal: Metal-to-Metal (optional soft seat)

• Connection: Flanged (ASME B16.5 / EN1092-1) or Butt Weld (ASME B16.25)

• Design Standard: API 6D / BS 1868 / ASME B16.34

• Test Standard: API 598 / ISO 5208

• Installation: Horizontal pipeline (with flow direction marking)

• Medium: Water, Oil, Gas, Steam, Chemical Fluids

• Temperature Range: -29°C to +450°C

🏭 Typical Applications:

• Oil & Gas Transmission Pipelines

• Petrochemical Plants

• Water Distribution Systems

• Thermal Power Plants

• Refinery and Boiler Systems

• Marine & Offshore Installations

🌟 Product Advantages:

• Supports both flanged and welding connections for flexible installation

• Designed for low-pressure loss and high flow efficiency

• Rugged construction, suitable for large diameter industrial pipelines

• Available with dual-disc or counterweight/spring designs for optional upgrades

• Custom face-to-face lengths available for retrofit or OEM use

📦 Optional accessories: lifting lugs, counterweights, damping devices.
OEM/ODM support for flange drilling, painting, logo casting.
🧾 Supplied with CE, ISO, API 6D, and MTC 3.1 certifications.