CLOSED system containers have a valve coupling system that seals the container opening on drums and totes, Intermediate Bulk Container (IBC), to prevent dirt, debris, bugs etc. from entering the container and contaminating the diesel exhaust fluid. Liquid in container system is sealed and secure, throughout container life cycle.
For closed systems, use Reusable Poly Valve (RPV) or Reusable Stainless Valve (RSV) systems accessories. RSV and RPV components are interchangeable.