... 4high rising pressure pump 5.stable operation, long life 1. Low noise, due to the helical suction and discharge, the ... volume efficiency.3. Stable performance. The blower rotor, casing, wall panels, shaft and other key components are all ... life. The blower bearing what we used are all double-row and Self-aligning bearing.11. The blower rotor ... -belt CoverV-beltLubricating oil waste water treatment pump