Dilute phase conveying system is generally used when conveying non-abrasive materials or where high material velocities and product degradation is not a factor. It unloads a railcar to storage silos with subsequent delivery of products to in-plant process bins. A vacuum blower is used to unload the railcar to a vacuum receiver. From the vacuum receiver a second blower conveys the material to the selected silos by pressure. This system can be set up with manual or automatic selection for silo delivery. From the silos, a second pressure blower conveys the materials to in-plant hoppers on a keep full or scaling basis with air and material being vented or conveyed back to the respective silos. This system is available in both vacuum and pressure conveying systems.