Use blast gates with a dust extraction set up to shut off the air flow to lines that are not required, therefore maximising the airflow from the line that is needed. Die cast plates are joined together and include a sheet metal blast gate with outlets that are 5" (125mm). Remember to always have at least one line open at all times and position the blast gate so it slides sideways, rather than up and down, so the vibrations do not close it during use.