Image Viper® Ball Shut Off Valve with Pistol Grip Markets Fire Protection Product Options Part Number Size Thread Material DVB1560S 1" NPSH Anodized Hard Coat Aluminum DVB1560F 1" NST Anodized Hard Coat Aluminum DVB3012S 1-1/2" NPSH Anodized Hard Coat Aluminum DVB3012F 1-1/2" NST Anodized Hard Coat Aluminum