SJ butterfly valve solves three major problems in industrial fluid control
SJ butterfly valve solves three major problems in industrial fluid control
Long lifespan, zero leakage, adaptive - SJ butterfly valve solves three major problems in industrial fluid control
Traditional butterfly valves often develop leaks due to wear on their sealing surfaces, creating a long-term risk to industrial safety and the environment.
SJ's butterfly valve solves this problem by using a triple-offset soft-sealing design, an aerospace-grade nickel-based alloy sealing ring, and laser cladding reinforcement technology. This advanced combination transforms the ideal of "zero leakage" into a tangible reality.
Triple-Offset Soft-Sealing Structure
The butterfly valve's triple-offset soft-sealing structure uses an innovative asymmetrical design. By precisely offsetting the valve stem and combining it with a unique conical sealing surface, the valve achieves frictionless opening and closing. As it closes, the rigid and elastic composite valve seat progressively forms a wedge-shaped compression, ensuring a bidirectional zero-leakage seal.
High-Performance Nickel-Based Alloy Material
The valve's sealing ring is made from a special nickel-based alloy that offers superior strength, corrosion resistance, and fatigue resistance at extreme temperatures, ranging from 650°C to 800°C. The material forms a dense oxide film that protects against corrosive substances like sulfides and chlorides, ensuring the valve maintains a zero-leakage seal even in high-pressure, high-temperature, and corrosive environments.
Laser Cladding Reinforcement Process
This process uses a high-energy laser to melt and deposit an alloy powder onto the valve's sealing surface, creating a high-performance coating. This advanced technique provides several key benefits:
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Ultra-High Speed Cladding: Quickly reinforces the surface.
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Grain Refinement: Enhances the material's strength.
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Deformation Control: Maintains the valve's precise geometry.
As a result, the butterfly valve's wear resistance, corrosion resistance, and fatigue resistance are significantly improved. In practical use, this reduces sealing surface wear, extends the valve's service life, cuts maintenance costs, and enhances overall equipment reliability and safety.
Long lifespan: a dual breakthrough in materials science and structural design
To solve the life problems of butterfly valves under high temperature, high pressure, and strong corrosion conditions, the SJ R&D team has overcome multiple material science challenges.
Valve body material: Made of duplex stainless steel 2205 and super austenitic stainless steel 904L composite forging, the intergranular corrosion resistance is improved by 300%;
Bearing system: Introducing a dual solution of self-lubricating graphite bearings and ceramic composite bearings to achieve lubrication free operation in a wide temperature range of -40 ℃ to 600 ℃;
