Gases are scrubbed by the action of the liquid spray which creates sufficient suction to entrain the gas and enter the throat piece where the gas and spray are mixed and the gas thoroughly scrubbed. With this system, gases cannot bypass the spray. Instead, due to the suction created by the spray, the passage of gas through the scrubbers is accelerated. High efficiency is obtained by using this type of unit due to the high impact of the spray particles, the large surface area of spray and the fact that all of the gas must pass uniformly through the spray.