Watts 405-nrs-rw cast iron gate valve 12 in flg 0702340 this osy flanged gate valve, watts 12 in model 408-osy-rw, is used in fire protection applications in fire main shutoff applications. It features an epoxy coated cast iron body with flanged connections, resilient wedge disc, and cast iron handwheel. It is ul/fm listed and complies with mss-sp-70. The maximum pressure is 250 psi (17 bar) cwp.