Bidirectional pressure butterfly valve
The Bidirectional Pressure Butterfly Valve is a high-performance industrial valve specially designed to provide reliable sealing and flow control under pressure conditions from both directions. Unlike conventional butterfly valves that are optimized for a single flow direction, this valve features a symmetrical sealing structure that ensures stable shut-off performance regardless of flow direction.
The valve adopts advanced sealing technology and a robust butterfly disc design, providing excellent pressure resistance, low operating torque, and long service life. It is suitable for applications where pipeline flow direction may change, or where safe isolation is required during reverse pressure conditions.
With its compact structure, reliable bidirectional sealing capability, and flexible operation options, the Bidirectional Pressure Butterfly Valve is widely used in water treatment, power generation, oil & gas, chemical processing, marine systems, and industrial pipeline applications requiring safe isolation and two-way pressure control.
Bidirectional pressure butterfly valve
We provide professional OEM manufacturing and customized solutions according to customer requirements, including:
Our Bidirectional Pressure Butterfly Valves are manufactured under strict quality management systems and comply with international valve industry standards, including:
Parameter Specifications
| Parameter | Specification |
|---|---|
| Product Name | Bidirectional Pressure Butterfly Valve |
| Valve Type | Bidirectional Sealing 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 | Wafer, Lug, Flanged, Butt Weld |
| Valve Body Material | Cast Iron, Ductile Iron, Carbon Steel, Stainless Steel, Duplex Steel |
| Disc Material | Stainless Steel, Carbon Steel, Alloy Materials |
| Shaft Material | Stainless Steel / Special Alloy |
| Seat Material | EPDM, NBR, PTFE, Metal Seat, Graphite |
| Sealing Type | Bidirectional Pressure Sealing |
| Operation Type | Manual / Pneumatic / Electric / Hydraulic |
| Actuator Type | Quarter-Turn Actuator |
| Pressure Direction | Bidirectional Pressure Resistance |
| Operating Temperature | -196°C to +600°C (Depending on Materials) |
| Applicable Media | Water, Gas, Oil, Steam, Chemical Fluids, Slurry |
| Leakage Class | ANSI Class IV / V / VI |
| Flow Direction | Bidirectional |
| Design Standard | API 609 / MSS SP-67 / ASME B16.34 |
| Pressure Test Standard | API 598 / EN 12266 |
| Flange Standard | ANSI B16.5, ASME B16.47, EN1092, JIS, GB/T |
| Double Block Isolation | Optional |
| Anti-Static Design | Available |
| Blowout Proof Shaft | Available |
| Fire Safe Design | Optional |
| Corrosion Protection | Coating / Special Surface Treatment |
| Automation Accessories | Positioner, Solenoid Valve, Limit Switch, Controller |
| Certification | ISO, API, CE, SIL, Fire Safe, MTC |
| OEM Service | Available |
Industry Applications
✔ Reliable sealing in both flow directions
✔ Excellent pressure resistance
✔ Suitable for pipeline reversal conditions
✔ Compact and lightweight design
✔ Low operating torque
✔ Long service life
✔ Wide range of material options
✔ Suitable for critical isolation applications
✔ Multiple actuator configurations available
✔ 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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