Butterfly valve
High-Performance Butterfly Valves for Industrial Applications
Butterfly valves are essential components in fluid control systems, offering reliable performance across various industries. Our premium-quality butterfly valves are engineered for durability, efficiency, and precise flow control in demanding environments.
Key Product Features
- Robust construction with high-grade materials
- Precision-engineered disc for optimal flow control
- Multiple actuation options (manual, pneumatic, electric)
- Zero-leakage design for critical applications
- Corrosion-resistant coatings for extended service life
Technical Specifications
| Parameter | Specification |
|---|---|
| Size Range | 2" to 48" (DN50 to DN1200) |
| Pressure Rating | 150psi to 600psi (PN10 to PN40) |
| Temperature Range | -20°F to 450°F (-29°C to 232°C) |
| Body Materials | Cast Iron, Ductile Iron, Stainless Steel, Carbon Steel |
| Disc Materials | Stainless Steel 316, Aluminum Bronze, Duplex |
| Seat Materials | EPDM, Viton, PTFE, Buna-N, Neoprene |
| Operation | Lever, Gear, Pneumatic, Electric, Hydraulic |
Butterfly Valve FAQ
What are the main advantages of butterfly valves over other valve types?
Butterfly valves offer several advantages including compact design requiring less space, lightweight construction, quick operation, excellent flow control capabilities, and lower pressure drop compared to gate or globe valves. They are also more cost-effective for large diameter applications and require minimal maintenance due to fewer moving parts.
How do I select the right butterfly valve for my application?
Selection depends on multiple factors: 1) Fluid characteristics (corrosive, abrasive, temperature), 2) Pressure requirements, 3) Flow control needs (throttling or on/off), 4) Installation space constraints, and 5) Actuation method. Our technical team can help analyze your specific requirements to recommend the optimal valve configuration with proper materials, seals, and actuation system.
What maintenance does a butterfly valve require?
Regular inspection of the valve disc, seat, and stem seal is recommended. Lubricate moving parts as per manufacturer guidelines. For critical applications, periodic seat replacement may be necessary depending on service conditions. Our valves feature easy-access designs for simplified maintenance without complete removal from the pipeline. Always follow the maintenance schedule in the product manual for optimal performance.
Performance Comparison
| Feature | Standard Butterfly Valve | High-Performance Valve |
|---|---|---|
| Bubble-tight Seal | No | Yes |
| Max Pressure | 150psi | 600psi |
| Temperature Range | -20°F to 250°F | -20°F to 450°F |
| Cycle Life | 100,000 cycles | 500,000+ cycles |
| Materials | Standard alloys | Corrosion-resistant alloys |
Installation Guidelines
- Ensure pipe flanges are clean and properly aligned
- Use appropriate gaskets for the media and pressure
- Install with disc in partially open position (15°)
- Tighten bolts in crisscross pattern to specified torque
- Operate valve through full range before system pressurization
- Provide adequate space for actuator maintenance
Common Applications
- Water treatment plants
- Chemical processing
- Oil & gas pipelines
- Power generation
- HVAC systems
- Marine applications
- Pharmaceutical manufacturing
More Butterfly Valve FAQs
Can butterfly valves be used for throttling applications?
Yes, high-performance butterfly valves with precision-machined discs and resilient seats are excellent for throttling applications. The flow characteristic is approximately equal percentage between 20° and 70° opening. For precise control, choose valves with position indicators and consider actuation packages with positioners.
What are the differences between wafer-style and lug-style butterfly valves?
Wafer-style valves are designed to fit between pipe flanges using through-bolts, making them more economical and lighter. Lug-style valves have threaded inserts allowing them to be installed at the end of pipelines without additional flanges. Lug-style is preferred for end-of-line service or when the valve needs to isolate a section of pipe.
How do I determine the proper valve size for my system?
Valve sizing depends on flow requirements (Cv calculations), pipe diameter, and system pressure drop limitations. Our engineers use proven formulas accounting for fluid properties, flow rate, upstream/downstream pressures, and allowable pressure loss. For most applications, matching the valve size to pipe diameter is standard, but specialized systems may require different approaches.