Sanitary Butterfly Valve Standard

I. Introduction
Sanitary manual externally threaded union butterfly valves are an important valve device widely used in industries such as food and pharmaceuticals. To ensure the safety and reliability of these valves during use, a series of standards have been established to regulate their design, manufacture, and use. This article will comprehensively, thoroughly, and in-depth explore the requirements and details of these standards.
II. Overview of Sanitary Manual Externally Threaded Union Butterfly Valve Standards
Sanitary manual externally threaded union butterfly valve standards primarily cover the following aspects:
2.1 Valve Body Material and Structure
• Sanitary Butterfly Valve body materials must possess excellent corrosion resistance and mechanical strength. Common materials include stainless steel and carbon steel.
• The valve body structure must comply with relevant national standards to ensure product strength and sealing performance.
2.2 Butterfly Disc and Seal Ring
• The butterfly disc is the core component of a sanitary manual externally threaded union butterfly valve and should possess excellent rigidity and wear resistance.
• The seal ring material should comply with relevant standards for the food and pharmaceutical industries to ensure product contamination.
2.3 Operating Handle and Transmission Device
• The operating handle should be easy to operate and properly positioned for easy operation. • The transmission can be manual or automatic, but in sanitary applications, special consideration must be given to product cleanliness and contamination-free operation.
2.4 Connection Method and Sealing Performance
• Externally threaded connections provide excellent connection reliability, ensuring the valve does not loosen during operation.
• The valve's sealing performance directly impacts product performance and requires excellent air and liquid tightness.
III. Detailed Requirements of the Standard for Sanitary Manual Externally Threaded Union Butterfly Valves
The standard for sanitary manual externally threaded union butterfly valves includes the following specific requirements:
3.1 Appearance Requirements and Length Dimensions
• The valve's appearance should be neat and smooth, free of obvious scratches and surface defects.
• The valve's length dimensions should comply with relevant national standards to facilitate connection to pipelines.
3.2 Overall Design and Material Requirements
• The valve's overall design should comply with relevant standards, including its structure and operating principle.
• The material selection should comply with relevant standards for the food and pharmaceutical industries to ensure product hygiene.
3.3 Operating Conditions and Pressure Ratings
• The valve should be suitable for common operating conditions, including temperature and pressure. • The valve's pressure rating should be determined based on actual usage to ensure product safety and reliability.
3.4 Fluid Dynamics and Sealing Performance
• The valve's fluid dynamics performance requirements must comply with relevant standards, such as the valve's flow characteristic curve.
• The valve's sealing performance requirements must comply with relevant standards to ensure leakage-free operation.
3.5 Operation and Maintenance Requirements
• The valve's operation should be simple and convenient, meeting actual usage requirements.
• Maintenance requirements specify requirements for valve installation, inspection, and maintenance to extend the product's service life.
IV. Conclusion
The development of a standard for sanitary, manually operated externally threaded union butterfly valves is of great significance for ensuring product hygiene, reliability, and safety. This article provides a comprehensive and in-depth discussion of the standard's overview and detailed requirements, hoping to be helpful to technicians and practitioners in this field. In actual applications, the standard needs to be appropriately adjusted and improved based on specific circumstances to ensure that valve performance meets user needs.