WAGNER powder injectors are based on the Venturi principle for the transport of the coating powder from a container to the gun. Here WAGNER uses suspension feeding to ensure a constant powder output without spitter. Suspension feeding allows also a highly flexible volume adjustment, which is a basic requirement for some applications. The powder volume is set by changing the supply or dosing air. Here the relevant WAGNER control units automatically set the right ratio between supply and doing air using the precision regulator. Thus the WAGNER injectors distinguish themselves by their easy operation and low maintenance. This ensures high process reliability for the user.