National Standard Clamp Butterfly Valve utilizes a high-performance three-dimensional eccentric, multi-level metal seal structure. This system was developed to absorb and optimize advanced international technologies, ensuring it remains the premier choice for demanding industrial applications.
Key Applications and Features
- Because of its versatile clamp-style design, this valve is particularly efficient for rapid installation and maintenance. It is specifically designed for:
- Metallurgy and Electric Power: Capable of maintaining integrity in medium temperatures up to 550°C.
- Petrochemical Systems: Provides a robust, leak-proof barrier for hazardous chemical transport.
- General Drainage: Serves as an excellent device for both regulating fluid flow and ensuring a complete cut-off.
Advanced Structural Benefits
Furthermore, the triple eccentric design ensures that the valve seat and butterfly plate experience almost no friction during operation. Consequently, this leads to a significant reduction in wear and tear, effectively extending the service life of the unit. Additionally, the unique sealing geometry allows the valve to become tighter as pressure increases, ensuring a more reliable seal under varied conditions.
Quick Specifications
| Component | Specification |
| Structure | Three-dimensional eccentric (Triple Offset) |
| Seal Type | Multi-level metal-to-metal |
| Max Temperature | 550°C |
| Operation | Low torque, high-pressure reliability |
Technical Features of the Clamp Butterfly Valve
1. Advanced Composite Sealing
The butterfly plate utilizes a specialized seal composed of layered hard and soft metal pieces. Because it integrates both a metal seal and a flexible seal, the valve offers the dual advantage of superior performance in both high and low-temperature environments. Consequently, users can expect excellent sealing integrity regardless of the thermal conditions.
2. Triple Eccentric Structural Design
By utilizing a three-dimensional eccentric structure, the valve seat and butterfly plate operate with almost zero friction. Furthermore, this design incorporates a “torque-sealed” function; essentially, the tighter the valve is closed, the more secure the seal becomes.
3. Reinforced Sealing Surfaces
The sealing surface is constructed using welded stainless steel and cobalt-based alloys. As a result, the surface exhibits exceptional wear resistance. This ensures a significantly longer service life even when managing high-pressure mediums.
4. Efficient and Reliable Operation
The unique structure ensures that operation is both nimble and effortless. While standard double eccentric valves only reduce friction during a specific portion of the travel, our HPV model adds a unique eccentric angle.
5. Frictionless Cone Slope Technology
The specific slope of the cone ensures that the seal and the seat avoid contact until the final point of closure. Therefore, friction is virtually eliminated during the opening and closing cycles, which drastically increases the valve’s lifespan. Additionally, operators can adjust the seal pressure through torque changes to ensure a reliable, “never-leak” performance.
Technical Comparison: Double vs. Triple Eccentric
| Feature | Double Eccentric Valve | HPV Triple Eccentric |
| Friction | Reduced only at 15° travel | Zero friction until closure |
| Sealing | Standard mechanical fit | Torque-adjustable seal |
| Life Span | Moderate | Exceptionally Long |
| Seal Material | Standard Metal | Cobalt-based Alloy |