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These valves are suitable whenever it is necessary to guarantee perfect dust- and pressure-tightness, even at high temperatures.
They can be used for powder, granules, pastes, liquids. Slide valve, whose opening can be adjusted by manual control.
They are full-passage valves, specifically conceived for perfect tightness to the inside and the outside (when closed).
If closed, tightness of the slide is achieved by means of special gaskets.
If open, tightness to the outside is guaranteed by an adjustable stuffing-box.
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