DuraDEF™ Nozzle with Mis-Fill Spout

for DEF/AdBlue®

The FLEX-ING™ brand DuraDEF™ nozzle features a specially encapsulated aluminum casting which is lightweight yet completely DEF/AdBlue® compatible. It provides the performance and construction specifications required for DEF/AdBlue® delivery in a familiar, user-friendly design. This nozzle features a mis-fill prevention spout that prevents DEF from being dispensed unless the spout is engaged with a miss-fill prevention device (MPD). The MPD is available separately.



  • High strength aluminum body and stainless steel spout.
  • Protective vinyl scuff guard.
  • Available with or without hold-open clip.
  • Spout designed for use with mis-fill prevention device.
  • Internal components are manufactured from stainless steel or plastic for full DEF/AdBlue® compatibility.
  • Sealed in a plastic bag to ensure no contamination.
  • Meets all required specifications set by ISO 22241 for DEF/AdBlue® delivery.
  • Mis-fill device available separately.


  • Inlet: ¾” BSPP
  • Spout: ¾” (19mm) stainless steel
  • Seals and poppet disc: Viton® A
  • Packing: PTFE
  • Body casting: Coated aluminum
  • Hand guard and vac cap: Nylon
  • Body cap: Coated zinc
  • Lever: Electroless nickel plated steel & nylon
  • Scuff guard: Vinyl
  • Weight / length / height: 2.5 Lbs. / 13.5” / 9”

Order Info

Model Description
DURADEF-MPD DuraDEF nozzle with mis-fill prevention spout, hold-open clip, light blue scuff guard
DURADEF-MPD-O DuraDEF nozzle with mis-fill prevention spout no hold-open clip, light blue scuff guard
DEF-MPD Mis-fill prevention device for ¾” spout