Reliable Butterfly Valves Supplier in China/Taiwan

Ball valve and butterfly valve both can isolate fluids in the processing system. So what is the exact difference between the ball valve and butterfly valve? We are going to describe the difference from 6 points.

1. Flow capacity.
   A butterfly valve can provide a larger flow capacity than a ball valve, it is easy to available at a large pipeline.
2. Application
   Butterfly valves are easy to clean, so they are commonly used in sewage, beer, and soda production, etc. Butterfly valves are very popular in waste treatment plants, chemical, agricultural, and food industries.
   Ball valves can be used at high temperatures or both liquid and gases with some solid particles. They are common in power plants, oil and gas, refining, and so on.
3. Zero leakage
   If conditions require zero leakages when shut off the medium, a ball valve with a high tight seal than a butterfly and make perfect sealing.
4. Operating condition
   The ball valve can be used for higher temperature and pressure than the butterfly valve. Usually, below 5.0Mpa and temperature below 250 degrees C can use butterfly valve, higher than data we can use ball valve.
5. Flow ports
   A butterfly valve only has two ports, while a ball valve could have more than two ports, it can be three ports(T or L type), four ports.
6. Function
   Ball valve and butterfly valve both can isolation process medium, but also can proportional flow control. But for small sizes, like below DN100, V port or segmented ball valve has better regulating performance than butterfly valve. For large sizes, we can use high performance or triple offset butterfly valves to control the flow capacity.
7. Costs
   For the same size, definitely butterfly valve more cost-effective than the ball valve(O type).