Pneumatic butterfly valve with hard seal
The Pneumatic Butterfly Valve with Hard Seal is a high-performance industrial valve designed for reliable shut-off and flow control in demanding operating environments. Equipped with a pneumatic actuator and a durable metal hard sealing system, this valve provides excellent sealing performance, high temperature resistance, wear resistance, and long service life.
Compared with traditional soft-seated butterfly valves, the hard seal design offers superior durability under high temperature, high pressure, frequent operation, and harsh media conditions. The pneumatic actuator enables fast response, remote control, and easy integration with automated systems such as PLC, DCS, and SCADA.
The valve is widely used in industrial pipelines, steam systems, power plants, chemical processing, metallurgy, oil & gas, and other applications requiring reliable sealing and automatic operation.
Pneumatic butterfly valve with hard seal
We provide professional OEM manufacturing and customized solutions for pneumatic hard seal butterfly valves according to different industrial requirements.
Available materials include:
Available actuator options:
Our pneumatic butterfly valves with hard seal are manufactured under strict quality management systems and comply with international valve industry standards, including:
Complete technical documents available:
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Name | Pneumatic Butterfly Valve with Hard Seal |
| Valve Type | Pneumatic Metal Seated Butterfly Valve |
| Application | Industrial Flow Control, Shut-off, High Temperature Service |
| Nominal Size | DN50–DN3000 (2"–120") |
| Pressure Rating | PN6–PN40 / Class 150–300 |
| Design Standard | API 609 / EN 593 / MSS SP-67 |
| Body Material | Carbon Steel / Stainless Steel / Alloy Steel |
| Disc Material | Stainless Steel / Duplex Steel / Alloy Steel |
| Shaft Material | Stainless Steel / Alloy Steel |
| Seat Type | Metal Hard Seal / Laminated Metal Seal |
| Connection Type | Wafer / Lug / Flanged Type |
| Actuator Type | Pneumatic Single Acting / Double Acting |
| Operating Pressure | 0.4–0.8 MPa Pneumatic Supply |
| Temperature Range | -40°C to +600°C (Customized Available) |
| Media | Steam, Gas, Air, Oil, Chemical Fluids, Hot Gas |
| Leakage Standard | API 598 / EN 12266 |
| Sealing Class | Metal Seat Tight Shut-off (Customized Available) |
| Face-to-Face Dimension | API 609 / EN 558 |
| Actuator Mounting | ISO 5211 |
| Control Method | Pneumatic / PLC / DCS Automatic Control |
| Surface Treatment | Anti-Corrosion Coating / High Temperature Coating |
| Protection Grade | IP65 / IP67 Optional |
| Installation Position | Horizontal / Vertical |
| Certification | ISO 9001, CE, API Standards (Optional) |
| OEM Capability | Size, Material, Seal Type, Actuator, Control System Customization |
Industry Applications
Pneumatic Butterfly Valves with Hard Seal are widely used in industries requiring durable sealing, automatic control, and reliable operation under harsh conditions.
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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