1. Basic Definition
Sanitary butterfly valves are valves specially used in fields with strict cleanliness requirements such as food, medicine, and bioengineering. Their opening and closing parts are disc-shaped butterfly plates. The butterfly plates are driven to rotate 0-90° by rotating the valve stem to realize the opening and closing, flow regulation, or flow direction switching functions of the pipeline medium.
2. Core Features
High hygiene standards
Using food-grade stainless steel materials such as 304 and 316L, the inner and outer surfaces are mirror-polished (roughness reaches Ra≤0.8μm or 600 mesh), with no dead angles and in compliance with aseptic standards, effectively preventing pollutant residues and microbial growth.
The specially designed streamlined butterfly plate and valve body reduce the medium accumulation area, support quick disassembly and cleaning, and meet CIP/SIP (online cleaning/sterilization) requirements.
Excellent sealing performance
Using non-toxic sealing materials such as silicone, fluororubber or fully coated polytetrafluoroethylene (F4), some models are equipped with metal hard sealing structure, which can withstand high temperature (-29℃~300℃) and corrosive media, and the leakage rate meets the sanitary standards.
Low fluid resistance
When the butterfly plate is opened, it is consistent with the flow direction of the fluid, and the resistance is only 1/3 of that of traditional valves. It is suitable for high flow rate and large flow scenarios (such as dairy filling and beer delivery pipelines).
Easy to operate
Supports manual handle, electric actuator or pneumatic control, the opening and closing range can be fixed at an angle of 15° intervals, and the adjustment accuracy is high; the electric model supports 4-20mA signal input to achieve automatic flow control.
3. Typical application scenarios
Food and beverage: filling and pipeline control of liquid foods such as milk, juice, and beer; Pharmaceutical industry: medium cutoff and distribution of sterile preparations and water for injection systems; Bioengineering: sanitary fluid management of cell culture fluid and fermentation tank pipelines.
4. Special Design
Quick-install connection: It adopts clamp or threaded quick-install interface, which has high installation and maintenance efficiency and reduces downtime;
Top-installation structure: Large-diameter models adopt the valve body top installation design to reduce bolt connection points, enhance system stability and reduce leakage risks.
Summary
The sanitary butterfly valve is designed for high-sanitary standard scenes such as food and medicine with its core advantages of aseptic materials, easy-to-clean design and high sealing. Its quick disassembly and assembly characteristics and low resistance design significantly improve production efficiency and media safety.