WiPa conveyor blowers type WITG are used for pneumatic conveying of crushed plastic material. Unlike the conveying blower types WTG and WRTG, the conveying blower type WITG operates as a pressure blower and is therefore not in contact with the material. The flowable material is metered into the pipeline via, for example, a rotary valve of an injector nozzle, which operates on the Venturi principle, and accelerated by the connected blower. Due to the adjustable nozzle, the WITG can be adjusted to almost any flowable material such as regrind, agglomerate or granules.