Irritrol's IPN-8Q 8' Fixed Spray Nozzle comes from the I-Pro Series. The IPN-8Qhas a flow rate of .18 - .31 GPM. It has a quarter-circle spray arc. The IPN-8Q has a 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.