... the interchangeability of parts and components increased.4. Low vibration. Although the rotor has been processed precisely, and ... since it is balanced precisely, it is almost without any vibration.12. Case Material: HT200, Impeller Material: QT400.13 ... fields, especially in gas transportation, waste water treatment, aquaculture, pneumatic transport, vacuum packing, oxygen generation, etc. 14.Oil tank: ...