Irritrol's SPK-HR1 HR1 Series Repair Kit comes from the HR1 Series. This kit can be used to repair any HR1 Series Valve. 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.