真空蝶阀、化工、建材、电站、玻璃等行业中的通风、环保工程的含尘冷风或热风气体管道中，作为气体介质调节流量或切断装置。
真空蝶阀用于接通或切断真空管路中的气流。
GI high vacuum butterfly valve is used to put through or cut off the airflow in vacuum pipeline.
GI型高真空蝶阀用于接通或切断真空管路中的气流。
GI high vacuum butterfly valve is used to put through cut off the airflow in vacuum pipeline.
GID型电动高真空蝶阀是以电动装置驱动阀杆与阀板执行启闭动作。
GID electric high vacuum butterfly valve USES electric device to drive the stem and disc to perform open and close action.
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