Betts Industries PPV DOT 406 Aluminum Pressure/Vacuum Normal Vent with Roll-Over Protection

The Betts Industries Normal Vent is the proven standard in the fuel transport industry, designed to normalize internal tank vacuum and pressure to keep cargo tank pressure within safe design limits. This vent features a unique weighted roll-over block that increases the set pressure during roll-over situations without acting as a shutoff device, maintaining its primary function as a pressure/vacuum relief device at all times. It is flow tested and marked per DOT requirements. The Model 6496, DOT406 style, has a pressure setting of not less than 1 PSIG and a vacuum setting of no more than 6 ounces, complying with 178.346-3(b)(2) and 178.346-3(c)(2) respectively.Normal Vent, Pressure/Vacuum, Aluminum Body, 1-5/8-12 UN Mounting Thread, 1200 CFH at 3 psi Pressure Flow, Set Pressure: 1.0 to 1.75 psi, -40 to 220 °F, 0.25 to 0.375 psi Vacuum Flow