What are the production standards for sanitary ball valves

The production standards for sanitary ball valves primarily encompass the following aspects:

Material Selection Standards

Sanitary ball valves typically use stainless steel materials such as ‌304‌ and ‌316L‌, which offer excellent ‌corrosion resistance‌, ‌oxidation resistance‌, and ‌hygienic properties‌. These materials meet stringent hygiene requirements in industries like food, pharmaceuticals, and bioengineering. Material purity is strictly regulated, with low impurity content to prevent contamination of media.

Manufacturing Process Standards

‌Precision Casting‌:
Utilizes investment casting technology to ensure high dimensional accuracy of the valve body and ball, along with superior surface smoothness, minimizing fluid resistance and residue retention.

‌Precision Grinding‌:
Valve cores and seats undergo precision grinding to achieve minimal clearance and reliable sealing, meeting zero-leakage standards. Typical sealing surface roughness reaches ‌Ra ≤ 0.8 μm‌.

‌Welding Process‌:
Implements high-quality welding techniques for required sections, ensuring defect-free welds (e.g., no porosity or slag inclusions) to guarantee structural integrity and sealing.

‌Surface Treatment‌:
Applies treatments like ‌polishing‌ and ‌passivation‌ to enhance surface finish, corrosion resistance, and ease of cleaning/disinfection.

Testing Standards

‌Pressure Testing‌:
Conducted at ‌1.5 times the design pressure‌ for a specified duration to validate pressure resistance and sealing performance.

‌Sealing Test‌:
Employs specialized equipment to rigorously test sealing capabilities under varied conditions, ensuring zero leakage.

‌Cleanliness Inspection‌:
Uses methods like ‌particle counting‌ and ‌solvent extraction‌ to verify internal cleanliness, confirming absence of impurities/residues per hygiene standards.

‌Material Inspection‌:
Performs ‌chemical composition analysis‌ and ‌mechanical property testing‌ on raw materials to ensure compliance.

Design Standards

‌Compliance with Industry Regulations‌:
Adheres to global standards such as ‌FDA‌ (U.S. Food and Drug Administration) and ‌EU‌ hygiene regulations for universal applicability.

‌Ergonomic Design‌:
Prioritizes user-friendly features (e.g., easy disassembly/cleaning, lightweight operation) to enhance efficiency and safety.

‌Reliability Engineering‌:
Incorporates advanced design concepts (e.g., ‌dual sealing‌, ‌self-lubrication‌) to improve service life and operational stability.