There are 4- and 3-way connectors available for combining and mixing gas as well as liquid supplies in miniaturized flow systems. They are compatible with flexible tubes with an inner diameter of 0.5 mm like the silicone tubing of the CPP1 peristaltic micropump series.
The Pyramid- and the Y-Connectors offer 4, respectively 3, fluidic equal ports without a predominant flow direction. That way one inlet stream can be split into 3 (2) equal outlet streams. The X-connector is offering the most miniaturized solution for combining and splitting 4 streams of gas and liquid. Multiple connectors can be stacked to enable a very high integration density for complex flow systems.