Industrial valve is an important accessory of the industrial pipeline control medium flow, which is widely used in petroleum, chemical industry, metallurgy, electric power, paper making, pharmaceut...
Wafer butterfly valve and Double Flange butterfly valve are two common types of butterfly valves. Both types of valves are rubber seated butterfly valves. The application range of the two kinds of ...
The continuous development of the valve industry (1967-1978)
01 Industry development is affected
From 1967 to 1978, due to the great changes in the social environment, the development of the valve ...
Wafer type
+ Lighter
+ Cheaper
+ Easy installation
- Pipe flanges required
- More difficult to centre
- Not suitable as end valve
In the case of a Wafer-style butterfly valve, the body is annular ...
The butterfly valve was invented in the United States in the 1930s. It was introduced to Japan in the 1950s and was not widely used in Japan until the 1960s. It was not popularized in my country un...
Both the handle lever butterfly valve and the worm gear butterfly valve are valves that need to be operated manually, commonly known as manual butterfly valves, but they are still different in use....
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