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SCR membrane vent valve

Eaton’s urea tank valves for Selective Catalytic Reduction (SCR) system controls allow customers to meet strict emissions requirements for urea-based Diesel Exhaust Fluids. (DEF) Membrane vent valves are designed for durability and reliability providing long-term venting and pressure relief in the urea tank. Our valves maximize tank capacity and optimize venting strategies.

reliable refueling
Spit-back prevention and vent path closures at end of fill
Improved Tank Safety
Long-term venting, pressure relief and liquid carryover


  • Ice shielding and build-up prevention
  • Long-term venting and pressure relief
  • Prevents diesel exhaust fluid escape
  • Low-profile design vs. float-based vent valves
  • External mounting
  • Minimal vapor loss; protects from overfill
  • Hot welded

Engineering Capabilities

Eaton's world class engineering and design expertise are leading the way in developing innovative and highly efficient fuel emissions controls. Dedication to system optimization has achieved a quality control rating of less than 2 PPM (parts per million).