Design principle of DIN hard seal gate valve

The design principle of DIN hard seal gate valve mainly involves several key aspects to ensure the reliability and sealing performance of the valve in high-pressure and high-temperature environments. Here are some main design principles:

1. * * Sealing Structure * *: Hard sealed gate valves usually use metal materials as sealing surfaces, which have high wear resistance and high temperature resistance. The contact surfaces between the sealing surfaces are precision machined to ensure a good sealing effect when closed.

2. Valve body design: The valve body is generally made of ductile iron material, which has high strength performance. The design of the valve body should consider the flow characteristics of the fluid to reduce pressure loss during the fluid flow process.

3. Valve disc design: The shape and material selection of the valve disc are crucial. The valve disc of a hard sealed gate valve is usually designed as parallel or wedge-shaped, which can evenly apply force when closed, ensuring a tight contact between the sealing surface and the valve disc.

4. * * Drive Method * *: DIN hard seal gate valves can be driven by various methods such as manual, pneumatic, or electric. When designing, the compatibility of the drive device and the convenience of operation should be considered.

5. Wear resistant and corrosion-resistant: In order to extend the service life of valves, surface coatings or corrosion-resistant materials are usually considered in the design, especially when dealing with corrosive media.

6. * * Maintenance and Repair * *: When designing, the convenience of valve maintenance and repair should also be considered, such as the design of replaceable seals, which facilitate maintenance without disassembling the valve.

7. * * Compliance with standards * *: The design of DIN hard seal gate valves needs to comply with relevant international and industry standards to ensure product reliability and safety.

Through these design principles, DIN hard seal gate valves can maintain good sealing performance and operational stability under various working conditions.

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