Check out this great video
Packaged system come pre-wired with connectors for each station. The are available up to 6 stations with 2 material valves. Rates up to 2000 PPH at 500'. Vacs, egenerative blowers and positive displacement pumps are available.
Central systems are available up to 16 stations, with and with out 2 material valves. A full range of vacuum chambers and pumps are available. PLC based controls are available with and with out color touch screens.