Removable With Pressure Mechanical Flag Type Passage Indicator

 Flag type mechanical passage indicator with flange,composed of mechanical contact-type main body and flag pig signaller. It has the feature of visual indication,mechanical parts automatic reset,visual,section manually reset and signal's remote transmission. And the cleaner pig running can be normal showed at two directions of front and reverse in the pipeline. Signaler can indicate the cleaner pigs passage situation by the mechanical structure of the positioning and fixed point, provide the information for operator and guide the technological process of switching.

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