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ZJL系列氣體循環冷卻羅茨式真空泵特點：Features:

◆外置冷卻器，泵可在很高的壓差下工作而不發生熱過載

External coolers, the pump can work under high pressure difference without the risk of thermal overload.

◆工作范圍寬，可直接排大氣

Wide range of work, the atmosphere can be directly discharged.

◆ 采用機械密封結構，并配合XYHZ-40稀油站使用，提供了一個潔凈無油的真空抽氣環境

The use of mechanical seal structure, coordinated with XYHZ-40 dilute oil station. A clean, oil-free vacuum air suction environment is provided. 

◆可與前級泵串聯使用，也可以單獨使用

Can be used in tandem with the prepump, and can also be used alone.

◆抽氣速率高

High-speed pump rate.

◆該泵與自身或普通羅茨泵串聯使用，對被抽系統無油污染

This pump is used in tandem with itself or ordinar root pump without oil polluiton to the pump system.