Pneumatic piston regulates butterfly's valve Inputting the source of the gas of control signal (4-20mADC or 1-5VDC ) can be controlled and operated, of simple structure and compact, processing is convenient, apt to make heavy-calibre, wash function by oneself, obstruction coefficient is small, ability is great that circulate. Regulation of the fluid of the particle and dense , turbid thick liquid and form fluid that suitable for suspending. Clean medium, can select the valve board for use and add and seal (the rubber is enclosed , four Fluorine is enclosed ) softly to reduce and leak (can be up to 0.01%), the high-pressure operating mode of the high temperature can select three for use and lean towards hard-hearted sealed valve body .

Pneumatic piston regulates butterfly's valve 

Major part material and recommending using the temperature range

Note: This form uses temperature, the medium temperature range that should follow its product in selecting for use actually for the limit of various kinds of materials , the ones that confirmed the material are the lowest, use temperature at most, its uses temperature not to be lower than medium temperature range lower limit minimumly, use temperature not to be higher than the upper limit of the medium temperature range at most.