In recent years, horizontal cartridge filters have developed rapidly and been gradually used in the industrial production. However, most existing studies are focused on the vertical dust collectors, and there are few studies on the effect of diversion device type on the cleaning performance of horizontal filter cartridge. Therefore, in order to investigate the influence of this important factor on the peak static pressure of this filter cartridge, three typical diversion nozzles were used to the experiment. This study examined the peak static pressure distribution along the surface of the filter cartridge during the pulse-jet cleaning process. The results showed as follows: among these three types of diversion nozzles, the rotating nozzle has the smallest size and the best uniformity of peak static pressure, but the peak static pressure was too low due to the energy consumption by rotation. For venturi, although the cleaning requirements can be guaranteed, the excessive pressure of the filter cartridge bottom can easily cause partial damage. Compared with these two, the diffuser nozzle can ensure excellent cleaning performance and make a smaller space occupation of horizontal cartridge filters. In general, it is suggested to select the diffuser nozzle for horizontal cartridge filter. (C) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.