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Enardo™ Model 4000 Free Vent
Enardo Model 4000 Free Vent
Enardo Free Vents are designed for use on bulk liquid storage tanks that contain non-volatile liquids.
These vents offer efficient flow capacity to protect the tank from positive or negative overpressure, and allow vapors to flow freely in and out of the storage tank. The Model 4000 and 4100 offer protection against rain, dirt, insects and other foreign matter entering the vent.
Enardo™ Model 4000 Free Vent


2 through 12
Housing Materials
Aluminum, Carbon Steel, 304 SS, 316 SS
Special Coating


  • Corrosion Resistant Materials
  • Wire Mesh Screen
  • 150 lb Flange Connection
  • Rugged, Forged Design
  • Available with ANSI, DIN and JIS Flanges