ZJL系列气体循环冷却罗茨式真空泵特点：Features:

◆外置冷却器，泵可在很高的压差下工作而不发生热过载

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

◆工作范围宽，可直接排大气

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

◆ 采用机械密封结构，并配合XYHZ-40稀油站使用，提供了一个洁净无油的真空抽气环境

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

◆可与前级泵串联使用，也可以单独使用

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

◆抽气速率高

High-speed pump rate.

◆该泵与自身或普通罗茨泵串联使用，对被抽系统无油污染

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