The L-BL2 range comprises compact plug-and-play systems for easy on-site installation. The pumps are air-cooled, 100 % oil-free and do not require additional water during operation. In addition, the vacuum pumps provide a much higher resistance to water and steam than alternative systems. Thanks to contact-free compression, they are virtually wear-free in operation and need no periodic maintenance. The patented discharge-air cooling system ensures that the pumps will not heat up by more than 15 K above room temperature. The pumps work reliably in continuous operation and are steam resistant and insensitive to condensation of the pumped air. （该l-bl2范围包括紧凑易于现场安装即插即用的系统。该泵的风冷，100%无油，不需要额外的操作过程中的水。此外，真空泵提供了一个更高的抗水和蒸汽替代系统。由于接触无压缩，他们几乎无磨损、操作不需要定期维护。专利discharge-air冷却系统确保泵不会热起来，超过15度以上的室温。该泵可靠地工作在连续操作和蒸汽抗性和敏感的空气冷凝泵。）

Vacuum power units of the L-BL2 Split type are standardised liquid ring pump circulation systems with patented exhaust air cooling for large volume flows. A considerable amount of the water contained in the cool exhaust air condenses, remains in the system, and is thus available as operating water. As a result many applications no longer require additional operating water. Our low-maintenance vacuum pumps have been tried and tested for many years in numerous industrial applications. A comprehensive product range of accessories is available for this pump type.（