The Mass Transfer Systems bi-directional jet aerators are designed with jet aeration nozzles installed on only one side of the liquid/air jet aeration manifold. This configuration is most applicable for square or rectangular tanks, larger lagoons, and sequence batch reactors where directional flow patterns are not desired.

The Mass Transfer Systems directional manifolds are designed with jets either entirely on one side of the manifold or on alternating sides. For alternating sides the nozzles are oriented on one side of the manifold to the center then on the other side for the remaining length. This configuration is most applicable for round tanks, lagoons, and ditches where directional flow patterns can be achieved to aid in the mixing of the tank contents.