CCE&CE offers a manually operated variable orifice for pulverized coal pipes.
The coal pipe variable orifice shall adjust and balance the coal flow in each pipe.
The variable orifice can be mounted either vertically or horizontally on the coal pipes. 

Working Pressure 300-400 mm WC
Working Temperature 90℃
Flow Medium Hot air and coal particles
Service  Regulating coal pipe flow
Installation Orientation Horizontal / Vertical