Enardo Model 2500 Emergency Relief Vents with Vacuum provide an emergency pressure relief opening for storage tanks when exposed to overpressures not handled by standard tank vents. When properly sized, this vent provides the capacity meet API Standard 2000 NFPA 30 and OSHA (29 CFR 1910.106) for emergency venting due to fire exposure, and offers high-capacity vacuum flow for emergency pump-out of product. The Model 2500 also provides quick, easy access for tank inspection and maintenance.