Hard sealing flange butterfly valve
The Hard Sealing Flange Butterfly Valve is a high-performance industrial valve designed for reliable shut-off and flow regulation in high-pressure, high-temperature, and demanding industrial pipeline systems. Featuring a metal-to-metal sealing structure, the valve provides excellent durability, high-temperature resistance, and long service life under harsh operating conditions.
Compared with soft-seated butterfly valves, the hard sealing design offers superior resistance to wear, corrosion, pressure fluctuation, and temperature changes. The flanged connection design ensures strong mechanical stability and easy installation, making it suitable for large-diameter pipeline applications.
The valve adopts an optimized disc structure and advanced sealing technology to achieve low operating torque, tight shut-off performance, and stable flow control. It is widely used in industries requiring high reliability, frequent operation, and resistance to extreme working environments.
Hard sealing flange butterfly valve
We provide professional OEM manufacturing and customized solutions according to customer requirements, including:
Our Hard Sealing Flange Butterfly Valves are manufactured under strict quality control systems and comply with international valve industry standards, including:
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Name | Hard Sealing Flange Butterfly Valve |
| Valve Type | Metal Seated Flanged Butterfly Valve |
| Valve Structure | Double Offset / Triple Offset Butterfly Design |
| Nominal Size | DN50 – DN3000 (Customized Available) |
| Pressure Rating | PN10 – PN420 / Class 150 – Class 2500 |
| Connection Type | Flanged Connection |
| Valve Body Material | Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Alloy Steel |
| Disc Material | Stainless Steel, Carbon Steel, Alloy Materials |
| Shaft Material | Stainless Steel / Special Alloy |
| Seat Material | Metal Seat / Stainless Steel Seal Ring / Graphite |
| Sealing Type | Hard Metal-to-Metal Sealing |
| Operation Type | Manual / Pneumatic / Electric / Hydraulic |
| Actuator Type | Quarter-Turn Actuator |
| Operating Temperature | -196°C to +600°C (Depending on Materials) |
| Applicable Media | Water, Steam, Gas, Oil, Chemical Fluids, High Temperature Media |
| Leakage Class | ANSI Class IV / V / VI |
| Design Standard | API 609 / ASME B16.34 |
| Pressure Test Standard | API 598 / EN 12266 |
| Flange Standard | ANSI B16.5, ASME B16.47, EN1092, JIS, GB/T |
| Offset Design | Double Offset / Triple Offset Optional |
| Fire Safe Design | Optional |
| Anti-Static Design | Available |
| Blowout Proof Shaft | Available |
| Corrosion Protection | Coating / Special Surface Treatment |
| Automation Accessories | Positioner, Solenoid Valve, Limit Switch, Controller |
| Certification | ISO, API, CE, SIL, Fire Safe, Fugitive Emission |
| OEM Service | Available |
Industry Applications
✔ Excellent high-temperature resistance
✔ Metal-to-metal sealing for long service life
✔ High pressure and wear resistance
✔ Suitable for large-diameter pipelines
✔ Low operating torque
✔ Reliable shut-off performance
✔ Resistant to corrosion and harsh media
✔ Multiple actuator options available
✔ Suitable for frequent operation
✔ Full OEM customization capability
Material customization plan
Customized 316L stainless steel valves forGerman chemical enterprises. Resistant tostrong corrosion, suitable for their acidicmedium transportation systems, with aservice life extended to over 8 years.
Structural optimization design
For the Saudi desert project, the valve stemsealing structure was changed to a doublebellows design to address the leakage issuein the high-temperature and dustyenvironment, and it was highly recognizedby the customers.
Interface standard adaptation
Customized API 600 standard valves for acertain company in the United States. Theflange size is fully compatible with ANSIB16.5, ensuring zero error during on-siteinstallation and reducing the constructionperiod by 30%.
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