Let’s discuss what special designs are present in current valve design.

The special design of valves is primarily aimed at their application environment and functional requirements. Here are some examples: 1. **Drain pan design for low-temperature valves**: This is intended to prevent pressure buildup caused by the evaporation of low-temperature liquids, and it is particularly suitable for liquefied gases or other low-temperature fluids. A drip tray helps to control and reduce temperature increases. 2. **Forced-seal design of orbital valves**: Used in situations where absolute sealing is required, such as with high-pressure gases or corrosive fluids. The orbital valve ensures no leaks by forcing the sealing surfaces together. 3. **Bidirectional sealing design of the plug valve**: Allows fluid to flow through the valve in two directions while still maintaining good sealing performance. This design increases the flexibility and application range of the valve. 4. **Explosion-proof valve design**: Used in flammable and explosive environments; the valve’s materials and structural design must prevent the generation of sparks or limit contact between sparks and combustible materials. 5. **Bellows-sealed valves**: Specialized bellows are used to prevent fluid leakage, and they are suitable for applications that require high sealing performance, such as those involving toxic, harmful, or high-temperature fluids. 6. **Pilot valve design for pressure regulators**: A pilot valve is used to control the main valve in order to precisely regulate the pressure of fluids; this approach is commonly employed for regulating the pressure of steam, gases, or other fluids. 7. **Pollution prevention design**: Certain valves, such as sanitary-grade valves, are designed to prevent contamination of fluids, making them suitable for industries like food and pharmaceuticals. Each special design is tailored to its specific application environment and functional requirements, ensuring the performance and safety of the valve. .