Often to drain liquids from a vacuum a tall (32 feet) barometric leg is used. Can I use such a leg to drain a slurry? The vacuum is approx. 200 mm Hg abs & the slurry has 5% to 10% hard crystalline solids in water. In particular how do I design the liquid seal at the bottom of the barometric leg? I'm posting a sketch of a typical "hot well" seal but this won't work for slurries, right? The solids would settle & block the hotwell. Any ideas?