The C4F pump is used to feed powder into the PRSTEN 03 and PRSTEN 03A guns from all stand-alone hoppers with fluidisation. It is possible to connect several pumps to one hopper at once. An air and powder feed hoses connect the pump with the gun. The charging (gun) and feeding (pump) air feed are initiated by pressing the manual gun trigger. The pump is supplied with hoses in the length of 3m or different on request.