The first sealing mechanism of the valve utilizes a bellows system, made from imported C276 material corrugated tubing from American Vuitton VTON. This high-quality alloy is known for its exceptional resistance to chlorine and corrosion, making it ideal for harsh environments. The lower end of the bellows, stem assembly, upper section, and connecting body plate are joined using advanced automatic thermal welding and heat treatment technologies. This ensures a robust structure that forms a reliable barrier between the internal pipeline medium and the external environment, guaranteeing zero leakage between the valve stem and the upper and lower valve bodies. The bellows also offer a telescopic life of at least 30,000 cycles, ensuring long-term reliability.
The bellows shut-off valve offers several key advantages, especially when used with highly toxic and hazardous media. Its design prioritizes safety and performance in critical applications.
1. **Bellows Sealing System**
The primary seal uses a bellows made from high-grade C276 material, providing excellent chemical resistance. The connection between the stem and the valve body is achieved through state-of-the-art welding techniques, ensuring structural integrity and leak-proof performance. This system effectively isolates the internal media from the outside, preventing any potential contamination or leakage. The bellows can withstand repeated expansion and contraction, offering a long service life.
2. **Fluororubber Skeleton Ring (Secondary Seal)**
A fluororubber skeleton ring is used as a secondary seal. Its self-lifting design enhances sealing performance under higher pressure, reducing the risk of leaks. Made from reinforced fluororubber, this component offers superior elasticity, corrosion resistance, wear resistance, and aging resistance. It acts as a backup in case the primary bellows seal fails, providing an additional layer of protection against leakage.
3. **Bellows Early Warning Device**
The valve is equipped with a sensitive fluororubber bellows or a pressure switch that triggers an alarm when the leakage pressure reaches 0.027 MPa. This early warning system is highly responsive, with stable and reliable performance. It is integrated with a proximity switch and an explosion-proof ceramic element, ensuring safe operation even in environments with flammable substances.
4. **PTFE Packing (Final Seal)**
The final sealing layer uses PTFE packing that is formed through advanced equal-pressure and high-temperature sintering technology. This packing provides excellent sealing performance, resists aging, and has a long service life. It also reduces friction, preventing valve stem locking. In the event of a secondary seal failure, the PTFE packing ensures the valve continues to operate without leakage, giving users time to perform maintenance safely.
This high-safety design makes the bellows shut-off valve an essential choice for handling dangerous and hazardous media.
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Submission:
Chromium Wear Ball
Steel ball is a commonly used grinding medium with the following characteristics:
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It should be noted that the appropriate size and material need to be selected according to the specific situation during the use of the grinding tool steel ball to ensure the grinding effect and service life. In addition, pay attention to safety precautions during use to avoid damage to personnel and equipment
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