Choosing the right valve is crucial in industries such as dairy, food, or biopharmaceuticals, as it is closely related to maintaining product quality and work efficiency.
The most commonly used valves in these sanitary fluid equipment industries are ball valves and butterfly valves. They can all handle various applications, but precisely because of this, how to choose has become a problem.
They have their own unique advantages and disadvantages, and this article will provide you with recommendations for choosing the right hygiene solution
SANITARY BUTTERFLY VALVE
- Application Design-----Butterfly valves regulate flow by rotating a circular disc located at the center of the pipeline on the shaft. This quarter turn valve is lighter and more compact than most ball valves, providing quick closure and effective flow regulation.
- Application industry-----Butterfly valves are key components in many low- to medium-pressure systems, particularly in the food and beverage industry (e.g., juice, water, or light dairy operations). They are also widely used in pharmaceutical and chemical processing where frequent cleaning and sterilisation are required.
Sanitary Butterfly Valve Advantage
Cost-effective: In large diameters, they are typically less expensive than ball valves.
Compact design: Their slim profile makes them particularly suitable for applications with limited space and weight restrictions.
Easy to install: Butterfly valves are typically equipped with clamp or flange connections, simplifying installation and maintenance.
Sanitary Butterfly Valve Drawbacks
Sealing capability: Although modern butterfly valves are highly reliable, they may not achieve the zero leakage performance of ball valves in high-pressure environments.
Pressure drop: Since the valve disc of a butterfly valve is always located in the flow passage, there is a greater pressure drop compared to a ball valve in the fully open position.
SANITARY BALL VALVE
Application Design-----The characteristic of a ball valve is that it has a spherical disc ("ball") with a hole in the middle. When the handle rotates, the hole aligns with the flow channel to allow fluid to pass through, or it rotates vertically to completely block the fluid. This quarter turn mechanism provides fast and convenient switch control.
Application industry-----Ball valves are widely used in industries such as food and beverage, dairy products, beer, and biopharmaceuticals. They can withstand higher pressures and provide safe, leak free seals, making them indispensable in applications that require minimal pollution and precise closure.
Sanitary Ball Valve Advantage
Excellent flow control: Ball valves produce virtually no flow restriction, effectively reducing pressure drop.
Reliable sealing: The tight seal of ball valves helps reduce the risk of product loss or contamination.
Durability: Their robust construction enables them to withstand high-pressure applications.
Multiple connection options: Available in tri clamp, flange, and NPT configurations, among others.
Sanitary Ball Valve Drawbacks
Cost: Ball valves are typically more expensive than butterfly valves, especially in large diameters or when special materials are used.
Design complexity: In some cases, the internal ball structure can accumulate deposits, but this can be addressed with proper maintenance.
How to choose
High pressure and precise control
Ball valves typically perform better when dealing with high-pressure environments or critical processes (such as certain biopharmaceutical applications) that require highly reliable leak proof seals. Its sturdy design and excellent sealing performance often balance its high initial cost, making it worthwhile.
General process control and cost-effectiveness
If your process operates in a medium pressure range and requires a lightweight and economical solution, butterfly valves may be the ideal choice. It performs particularly well in application scenarios that require complete sterilization, easy maintenance, and rapid opening and closing.