QC nozzles are quantity controllable hollow cone nozzles.

QC Nozzles have the following features. By controlling the return pressure at a constant supply pressure, the spray flow rate is variable in a wide range of 10:1. At a constant supply pressure, the less the spray flow rate, the smaller the particle diameter. QC Nozzles are available in a single pore type and multiple pore type (two, three, four, seven pores). The nozzle is composed of a body, a nozzle tip, a whirl chamber, an outer tube, innertube, socket and flange. The liquid enters the body from the socket into the outer tube and passes through the whirl chamber and part of it is sprayed through the nozzle tip while the rest of it is returned to the socket by way of the inner tube. Since the particle diameter is smaller when the spray flow rate is smaller QC nozzles are suited for use in gas cooling chambers of various electric precipitators.