The DE 2 oil filter is integrated into the oil circuit of rotary vane pumps and accommodates two filter cartridges. The delivery includes one cartridge with activated alumina and one with cellulose for solid filtration. Additionally, replacement cartridges with cellulose (also for the USA, order no. 12633) or activated carbon for chlorinated or nitrous media are available. The filter unit improves oil cleanliness, extends the service life of the operating fluid, and increases the pump’s lifespan.