On your recovery tank like this crap truck driver just experienced.
View: https://youtu.be/tOmu_kh9vhs?si=NFEnxirbAxv7eoSu
View: https://youtu.be/tOmu_kh9vhs?si=NFEnxirbAxv7eoSu
When I thought my blower was bad on my Everest with the bad vac gauge, it must’ve been pulling 20hg to slow my engine down to stall it out. I’m so glad it didn’t make my tank implodeIt just needs a little dent to trigger a collapse under load. In operation needs only up to 20 Hg, but dummies will push it.