Irritrol's 2500T 1" Electric Globe Valve comes from the 2500 Series. It has a 1" NPT thread. The 2500Thas a flow rate of .25 - 30 GPM. It has a pressure rating of 10 - 150 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.