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3.4.1 Dual function pneumatic
An additional 3-way slide valve (pos. 6.1) enables the operator to open or close the metering valve
when the deadman handle is depressed. When the slide of the 3-way valve is moved to the left the
abrasive metering valve opens, to the right it is closed again. When the deadman handle is released
the media metering valve closes independent of the slide position.
Figure 4: Dual function pneumatic.