Working principle of sanitary grade three piece butterfly valve

The working principle of the sanitary grade three piece butterfly valve is based on the rotational motion of the butterfly plate to control the opening, closing, and adjustment of the fluid channel. The core component is a circular butterfly plate, which is installed in the diameter direction of the pipeline and rotates with the rotation of the valve stem. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, with a rotation angle usually between 0 ° and 90 °. When the butterfly plate rotates to 90 °, the valve is fully open, allowing fluid to pass freely; When the butterfly plate is perpendicular to the direction of fluid flow (i.e. 0 ° position), the valve closes, preventing fluid from passing through. The butterfly plate can also adjust the fluid flow rate at the middle position.

Main characteristics of sanitary grade three piece butterfly valve

1. Simple structure, easy to disassemble and clean:

The sanitary grade three piece butterfly valve is composed of a three-stage valve body combination, and the valve bodies are all detachable connections, with a simple structure and easy maintenance. This design not only facilitates the daily maintenance and upkeep of the valve, but also ensures that there are no dead corners inside the valve, meeting hygiene requirements.

2. Excellent material and high hygiene quality:

Valve bodies, valve stems, and other steel components are usually made of stainless steel, such as SUS304 or SUS316L, which have excellent corrosion resistance and mechanical properties.

Rubber sealing rings and other components are made of food grade rubber materials to ensure that the parts in contact with the medium meet hygiene standards and will not contaminate the fluid.

3. Good sealing performance:

The sealing principle of butterfly valves is to use the rotation of the valve plate to compress the outer sealing surface of the valve plate against the synthetic rubber valve seat, causing elastic deformation and forming a sealing pressure ratio to ensure the sealing performance of the valve.

Sealing rings are usually made of PTFE or other high-performance materials, which can maintain good sealing effect in high-pressure and high-temperature environments.

4. Easy to operate and low driving torque:

The opening and closing range of the sanitary grade three piece butterfly valve is 0 ° to 90 °, which can be fixed at every 15 ° position and has adjustability.

The valve is easy to operate, fast, and has a small driving torque, making it suitable for various automation control systems.

5. Good flow regulation function:

Butterfly valves have good flow regulation functions, which can accurately control the flow of media by changing the angle of the butterfly plate.

When fully open, the valve has a small flow resistance; When partially opened, sensitive flow control can also be performed.

6. Wide applicability:

Sanitary grade three piece butterfly valves are specially designed for stainless steel piping systems in industrial fields such as dairy products, food, pharmaceuticals, beer, cosmetics, etc.

Its smooth, seamless, and automatically draining fluid channel design is highly suitable for steam and other on-site cleaning needs.