Multiple flow selections and stream patterns. Manufactured with highest quality anodized aluminum and a long lasting protective surface to provide protection against corrosion. Versatile selectable flow nozzles constant gallonage in all flow and pattern settings patented rylstatic system for a superior fog pattern high quality valve with dual seat and dual driven shaft superior quality valve with dual seat and dual drive shaft designed and built to meet NFPA 1964 & UNE EN 15182-2 Type 3 requirements. For more information, go to https://www.atifireproducts.com/nozzles/viper-blue-devil.php