Reliable DN100 150LB Flanged Check Valve

Our 4 inch (DN100) 150LB CF8 stainless steel flanged swing check valve is a high-performance industrial non-return valve engineered to automatically prevent fluid backflow in oil & gas, chemical, water treatment, power generation, and HVAC pipeline systems. As a professional industrial valve manufacturer, we craft this swing check valve with premium CF8 (304) cast stainless steel, delivering exceptional corrosion resistance, high strength, and long-term durability in harsh industrial environments.

This 4" 150LB flanged swing check valve features a full-bore swing disc design, which minimizes pressure loss and flow resistance while ensuring reliable, automatic backflow prevention. The precision-machined disc and seat structure deliver tight zero-leakage shutoff, protecting pumps, compressors, and pipeline equipment from reverse flow damage. Compliant with ANSI/API 600 standards and equipped with RF flanged end connections, this stainless steel check valve ensures seamless integration into global pipeline systems, making it ideal for water, oil, gas, and corrosive medium applications.

Built with industry-leading craftsmanship, our CF8 swing check valve includes heavy-duty stainless steel bolts, a robust bonnet design, and high-performance sealing components for extended service life. All units undergo rigorous quality testing to meet CE & ISO certifications, ensuring consistent performance and global market acceptance. Whether for permanent pipeline installations or high-demand industrial applications, this 4-inch check valve provides reliable, maintenance-free backflow protection for a wide range of industrial processes.

Key Specifications

• Valve Type: Flanged Swing Check Valve (Non-Return Valve)

• Size: 4 Inch (DN100)

• Pressure Rating: 150LB (Class 150, ANSI B16.34, PN16 Compatible)

• Body Material: CF8 (304 Cast Stainless Steel)

• Disc Material: CF8 (304 Stainless Steel)

• Connection Type: RF Flange (ANSI B16.5 / DIN / GB Standard)

• Sealing Material: Metal Seat / Soft Seat (PTFE Optional)

• Standard Compliance: API 600, ANSI B16.34, CE, ISO 9001

• Working Temperature: -29℃ ~ 425℃

• Application: Backflow Prevention for Oil & Gas, Chemical, Water, Power, and Industrial Pipelines

Core Features 

✅ Automatic Backflow Prevention: Swing disc design enables automatic operation without manual intervention
✅ Full Bore Flow: Minimal pressure drop for maximum flow efficiency
✅ Superior Corrosion Resistance: CF8 (304) stainless steel construction resists rust, chemicals, and erosion
✅ Tight Zero-Leakage Shutoff: Precision-machined disc and seat ensure reliable isolation
✅ Global Standards Compliance: ANSI/API 600 & CE/ISO certified for worldwide use
✅ Durable Hardware: Heavy-duty stainless steel components for long-term reliability
✅ Easy Maintenance: Bolted bonnet design simplifies inspection and servicing

Application Scenarios

This 4" 150LB CF8 flanged swing check valve is widely used in:

• Oil & Gas Transmission & Distribution Pipelines

• Chemical & Petrochemical Processing Plants

• Industrial Water Supply & Wastewater Treatment Systems

• Power Generation (Thermal, Nuclear, Renewable)

• HVAC & Building Services Pipelines

• Pump & Compressor Protection Systems

• General Industrial Fluid Control Systems

4 inch swing check valve, 150LB CF8 check valve, DN100 flanged check valve, stainless steel non-return valve, industrial backflow preventer, API 600 check valve, ANSI 150LB check valve, oil and gas check valve, water treatment check valve, Wenzhou check valve manufacturer, Hyton valve supplier

As a professional industrial valve provider, we offer a full range of check valves, including swing check, lift check, wafer check, and dual plate check valves. Contact us for a free quote on your 4 Inch 150LB CF8 flanged swing check valve or custom industrial valve solutions.