- 3″ NPT “5-In-1” combination pressure/vacuum/fusible vent
- Fluoroelastomer seals
- Rated for 5.0 PSI pressure and 0.5 PSI vacuum
The Five-In-One fusible cap combines five features into one compact device. It is a bulk storage tank fill cap, high temperature fusible device, pressure relief vent, and vacuum relief vent with integral vent guard. The fusible link is unbreakable and includes cable and hardware to mount to the tank. The vent guard provides roll over protection. This fill cap is an all in one venting solution for UN31A tanks. A full range of seal materials is also available to work with your chemical and environmental needs.