Sanitary Stainless Steel Valves & Fittings: Ensuring Hygienic Flow Control for Milk, Yogurt & Juice Filling Lines(Part 2)

3‑A Certification and Industry Standards for Sanitary Design
The dairy and beverage industries impose stringent certification requirements on valves and fittings. 3‑A Sanitary Standards are the most authoritative sanitary design standards in the North American dairy and food processing sectors. Valves and fittings that comply with 3‑A standards ensure hygienic conditions are maintained during processing operations. 3‑A certified components help facilities run smoothly, efficiently, safely, and cleanly while meeting production and quality requirements. Sanitary divert valves manufactured by brands such as Dixon, constructed from 316L stainless steel, meet 3‑A sanitary standards. 3‑A certified stainless steel butterfly valves meet applicable requirements for handling or coming into contact with dairy products.

EHEDG (European Hygienic Engineering & Design Group) is the authoritative body for hygienic design standards in Europe. Valves and fittings that comply with EHEDG standards are widely recognised as indicators of high hygiene levels. FDA standards represent the U.S. Food and Drug Administration’s requirements for food‑contact materials; sanitary valves are widely used in dairy pipelines and beverage filling lines, meeting FDA standards.

In terms of valve types, common sanitary valves used in dairy and beverage filling lines include:

Sanitary butterfly valves: Manufactured from SUS304 or SUS316L stainless steel, suitable for dairy, food, pharmaceutical, beer, and other applications with high hygiene requirements. Flow is regulated by rotating the disc via a handle or pneumatic actuator.

Sanitary ball valves: Available in full‑bore and three‑piece configurations, both used for high‑purity fluid control. The full‑bore design with no flow obstruction makes them the ideal choice for viscous liquids or liquids containing solid particles.

Sanitary diaphragm valves: Feature a packing‑free design that eliminates leakage risk. The diaphragm serves as a fluid barrier and is suitable for flow control and switching operations in food, beverage, dairy, brewing, and pharmaceutical industries.

Sanitary check valves: Used to prevent media backflow.

Divert valves: Used for changing the direction of all fluid flows. Products such as the GEA FLOWVENT divert valve series cover all important applications in the food, dairy, brewing, and beverage industries.

The connection method for sanitary valves and fittings is predominantly clamp‑type quick‑connect. This quick‑connect design significantly reduces equipment cleaning and changeover time, improving production flexibility. All sanitary valves and fittings are manufactured from stainless steel that complies with food‑contact standards, with 316 stainless steel being the mainstream choice. When a system of sanitary valves and fittings that complies with 3‑A and EHEDG standards enters a filling line, it brings not just a set of fluid control components, but a complete verifiable hygiene assurance system – ensuring that from milk to juice, every bottle is filled in a completely hygienic piping environment.