Connector are used to connect between tubes of different sizes.

When using silicone tubes, it's possible to use a connector that is 1-2mm bigger than the tube's inner diameter, because of their flexibility.

It's also possible to slightly heat up the edge of the tube in order for it to expand it until it fits the connector.

For our uses, most of the work is done using 3mm splitters that join between valves and actuators on 2mm tubings.

We can use 4mm→3mm reducers to connect the pump to the rest of the pneunet.