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Electric ventilation butterfly valve
Nominal pressure: PN0.05~ 0.6mpa
Nominal diameter: DN300 ~ 4000mm
Driving mode: pneumatic, electric
Applicable medium: cold and hot wind, flue gas
Design standard: GB/ T12238-1989 JB/ T8692-1998
Flange connection dimensions: GB/ T9115.1-2000
Structure length: GB/ T12221-1989
Pressure test: GB/ T13927-1992;JB/T9092-1999
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