... 3. Save power, air drive Dense Phase Pneumatic Conveying System/ Pneumatic Conveying System Selection and Application of Storehouse(cone) ... Specification: 0.5m3 1m3 2m3 . Operating principleDense phase pneumatic conveying pump also named conveying warehouse pump.Sending system operating ... discharge valve and the intake valve is closed while Pneumatic sealing valve, close calve and exhaust valve open, ...