butterfly valve advantages and defects
1 Butterfly Valve advantages
1. Open and close easily and quickly, effort, fluid resistance is small, can operate frequently.
2. simple structure, small size and light weight.
3. can carry mud, with the least accumulation of fluid in the pipeline opening.
4. low pressure, it can achieve a good sealing.
5. good regulating performance.
2 Butterfly Valve defects
1、 a small range of using pressure and working temperature.
2、 poor sealing performance.
Butterfly valve according to the structural style can be classified as
bias plate, vertical plate, inclined plate and lever type. According to
the sealing forms can be classified as soft-sealed type and hard-sealed
two kinds. Soft sealed type commonly uses rubber ring sealing, hard
sealed type commonly uses metal ring sealing.
According to connection type it can be classified as flange connection
and wafer connection; according to transmission mode can be divided into
manual, gear transmission, pneumatic, hydraulic and electric.
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