Irritrol's PRO-VAN8 8' Adjustable Nozzle with Filter comes from the Pro-VAN Series. The PRO-VAN has a flow rate of .53 - 2.78 GPM. It has a 0 - 360-degree spray arc. The PRO-VAN has an 8' radius. It has a pressure rating of 20 - 50 PSI. Irritrol has made their name as a brand by selling and marketing exclusively to the professional installer, as a result their products are geared to be dependable and durable. Irrirtrol is now making their products available to you through our website. If you are looking for a product line that will last year in and year out, Irritrol is the brand for you.