What are the design features and working principle of sanitary diaphragm valves?

Designed for the food, pharmaceutical, biotechnology, and cosmetics industries, the Sanitary Diaphragm Valve is a high-performance fluid control component with an elastomeric diaphragm as a seal for a dead-space, easy-to-clean, and highly hygienic fluid cut-off or regulation.

 

Design features of sanitary diaphragm valves:

Diaphragm: Made of silicone, PTFE and other materials, it has excellent corrosion resistance and biological inertness.

No dead zone design: Smooth flow channel with no residual corners, which is conducive to CIP/SIP cleaning and sterilization.

Fully encapsulated: All fluid contact surfaces are made of high-grade materials to avoid metal exposure.

Quick release structure: easy to quickly disassemble and assemble, improve maintenance efficiency.

 

Working principle of sanitary diaphragm valves:

The sanitary diaphragm valve deforms the diaphragm by means of a drive mechanism (manual, pneumatic, electric) to open or close the flow channel and control the flow of the medium. The gas or liquid pressure above the diaphragm causes the diaphragm to adhere to the valve seat and achieve a seal; When the pressure is released, the diaphragm returns to its original state and fluid can pass through.

What makes the hygienic diaphragm valve its "sterile" design ensures that the product does not introduce sources of contamination when it comes into contact with sensitive media, while also facilitating cleaning and disinfection.