工作腔内无水无油，可获得清洁真空。
Oil& Water free Dry running operation makes clean vacuum.
单级设计确保固体废渣更容易排出并大幅减少泵内残余物。
Single stage design enables solid waste easy discharge and eliminate residue in the pump.
通过特殊涂层处理，可用于抽取有毒、有腐蚀性及可凝性气体。
Suitable for pumping Toxic, Corrosive and condensable gas by special coating.
工作方式不使用油或水，大幅降低操作成本。
Not using Oil or Waste as pumping medium, low operation cost.
密封方式为机械密封&唇形密封。
Bellows type Mech. seal & Lip seal.
简便的设计结构易于设备维护。
Simple design results easy maintenance.
螺杆与螺杆之间及泵体与螺杆之间无金属接触，使用寿命长。
No metal-metal contact between Screw and Casing ensures long pump life.
气体通路较短，可使气体快速排出。
Short gas path through the pump make quick gas discharge.
螺杆转子具有较高的工作效率。
Screw type rotors have high volume efficiency.
噪音低，振动小。
Slow rotational speed results low vibration and low noise level.