它除了具有一般罗茨真空泵机组的一些特点外，由于采用水环式真空泵作前级泵，因此，它特别适用于抽除含较多蒸气及有一定腐蚀性气体的工业流程中。例如：For example:制药业的真空蒸馏、真空蒸发、脱水结晶；轻纺工业的涤纶切片干燥；食品工业的冷冻、干燥等工艺均可采用。
Besides having some features of general Roots vacuum pump, this unit treats two-stage water-ring vacuum pump as prepump, so it is specially suitable for industrial-process with a large quantity of vapor and some corrosive gases.The process such as vacuum distillation, vacuum evaporation, dehydration and crystallization in pharmacy, polyester chips drying in textile industry, freezing and drying in food industry could be adopted.
该机组是以普通罗茨真空泵为主泵，以双级水环式真空泵为前级泵的自动启闭，自动过载保护的成套真空获得设备。
This unit is complete vacuum equipment which treats general Roots vacuum pump as the main pump, two-stage water-ring vacuum pump as prepump to achieve automatic open, close and overload protection.
常用真空泵bao括干式螺杆真空泵、水环泵、往复泵、滑阀泵、旋片泵、罗茨泵和扩散泵等，这些泵是我国国民经济各行业应用真空工艺过程中必不可少的主力泵种。近年来，
伴随着我国经济持续高速发展，真空泵相关下游应用行业保持快速增长势头，同时在真空泵应用领域不断拓展等因素的共同拉动下，我国真空泵行业实现了持续稳定地快速的发展。