Hard Seal Flange Ductile Iron Material Gear Box Butterfly Valve
Hard Seal Flange Ductile Iron Material Gear Box Butterfly Valve
Product Description
1. Simple introductionofHard Seal Flange Ductile Iron Material Gear Box Butterfly Valve
The butterfly valve has mainly consisted of body, stem, disc, seat, and driver (manual, gearbox, pneumatic and electric Actuator) and so on. The on-off and controlling flow of the valve is made by turning the stem and disc together.
|
Material of Seat |
Workingtemperature |
Applicable medium |
|
Natural rubber |
≤85ºC |
Water, air |
|
CR |
≤85ºC |
Water, gas |
|
NBR |
≤120ºC |
Water, oil |
|
EPDM |
≤120ºC |
Water |
|
Viton |
≤150ºC |
Water, steam, strong acid, strong alkali |
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