Gate valves and butterfly valves are the two most important types of valves used to control flow in pipelines. Their main differences are:
Judberd gate valve and butterfly valve
1,Functionality
Gate valves fully open or fully close, while butterfly valves can partially open or close to regulate flow. Choose a butterfly valve if you need partial control; gate valves are for complete shut-off or full opening.
2,Sealing Direction
Gate valves have bidirectional sealing, not influenced by flow direction during installation. In contrast, centric butterfly valves have bidirectional sealing, while eccentric ones have unidirectional sealing. Pay attention to the flow direction arrow marked on the body during eccentric butterfly valve installation.If you need bidirectional eccentric butterfly valve,you need to give special requirement to us,then we can produce bidirectional type eccentric butterfly valve for you.But bidirectional eccentric butterfly valves is much more expensive than unidirectional type.
3,Actuation Mechanism
Gate valves operate by the up-and-down movement of a gate, while butterfly valves use the rotation of a disc around a stem. For large-sized valves (greater than DN1000), butterfly valves are preferable due to their lighter weight and more compact structure.
4,Structural Length
Gate valves require longer structural lengths, but butterfly valves can have shorter designs like wafer, lug, and U-type, suitable for limited space installations.
5,Corrosion Resistance
Butterfly valves can be protected against corrosive media through seat vulcanization and rubber coating on the disc, unlike gate valves. Choose butterfly valves for highly corrosive media.
6,Stem Strength
Butterfly valves require stronger stems to withstand higher pressures from the media compared to gate valves.
7,Disc Movement
Unlike gate valves, the disc in a butterfly valve can move into adjacent pipeline components when open, so be mindful of this.
8,Drilling Holes in Pipelines
Gate valves are necessary when drilling holes in pipelines as the cutter must pass through the valve inside diameter, requiring the valve bore to be larger than the cutter’s diameter.
photo from google ,for instruction purpose only
In conclusion, gate valves and butterfly valves each have their pros and cons. Choose the valve that best suits your specific operational conditions.
If you need gate valve or butterfly valve manufacturer from china, Judberd is your right choice.
