The initial step in the flotation process is selective attachment of mineral particles to gas bubbles, which occurs rapidly under proper conditions. The subsequent transportation of bubble-particle aggregates to an external collection launder via the froth phase complicates the overall process, and is often a rate-limiting step and the bottleneck, ie a significant challenge in froth flotation is the froth itself. In other words, if the bubble-particle aggregates are collected without the formation of a froth phase, the flotation process will be much faster and efficient, and the residence time and footprint can be significantly reduced. This paper describes a novel flotation system developed by Woodgrove, which transports bubble-particle aggregates directly to a collection pipe via bubbly flow, and a conventional froth is not created. The separation system is pressurised, and product recovery is controlled through a control valve. Pressurisation is attained through a pump or a head tank, which allows for multiple separation stages in series that are constructed on a single elevation, with product pipes flowing into a common collection box. This design results in space savings and power savings over conventional mechanical cells. In addition, the low air rates of this system and multiple stages provide significant selectivity enhancement over flotation columns. The pilot plant testing of this frothfree equipment is described, and examples of industrial installations are provided.