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Betts' fabricated construction assures quick and easily
welded installation. Oval shape offers flexibility in designing
equipment and most efficient operation. A secondary Latch is standard on
Betts Aluminum Pressure Vacuum Vent
PPV DOT406 normal vent.
Betts Emergency Valves
A Betts valve is a fixture designed to allow personnel
to unload an overturned tank truck through a capped three-inch NPT
cleanout without spillage of the product. These emergency valves permit
the removal of the liquid through the cleanout cap and product discharge
through proper hoses to the level of the cleanout cap. ES&H maintains
these units on our hazmat response trailers. These are very useful in
the event of a chemical tanker overturning when drilling the tank is not
a viable option due to tank composition, position or preference.