Blue1 Energy Equipment Titan High Flow Poly Container Valve. 4 cam 2.5 buttress thread EPDM gasket. Optimized for performance that meets and exceeds DEF market demands. Secure, tamper evident ready. Simple as Click. Pump. Go. Universal fit – Standard lengths will operate in all commonly found 275g and 330g IBC's as well as the industry's most popular 55g TH Drums.