The new ultra low-profile Magnetic Vacuum Breaker is a valve
designed to limit negative pressure (vacuum) in a typical tank trailer.
This model has a 3” NPS swivel connection and stands less than 3” when installed on a typical tank
nozzle, making it easy to install under already existing overturn protection.
Customers using the older MC307 style 3MVB should consider this new model which is lower in cost
provide an increased flow rate over the 3MVB.