Fisher 8580 High-performance Butterfly Valve
The operating mode of the actuator/valve assembly can be changed from downward push to open to downward push to close, and vice versa, without the need for additional components.
Both the metal and the soft sealing ring have pressure-assisted sealing functions, ensuring a tight shut-off even under pressure reduction conditions.
The standard valve structure includes conductive packing, which can provide electrical connections for applications in hazardous areas.
The valve and the corresponding valve internals components can operate at high temperatures.
Additional stroke indication can be obtained through the indicator lines on the shaft and the butterfly plate position marks on the packing cover.
An additional drive shaft fixation device is provided, thereby providing additional protection for the shaft. The sealing gasket sleeve, the anti-detachment ring, and the valve shaft groove work together to fix the valve shaft on the valve body.
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