Although it is impressive how fast you can implode a tank, no one wants to lose a fermenter or bright tank to vacuum failure. The good news is you can prevent vacuum failure with minimal effort. You just need the right size and type of vacuum relief valve for your situation.
There are several different types of relief valves to choose from. Ashton Lewis, Master Brewer-in-Residence for Paul Mueller Company, gives us a quick rundown on the main differences.