How many connections do you see? When putting together distillation systems that function under vacuum, you cannot forget to grease all the connections or leaks will happen. Tracking down a leak after everything is set-up just leads to frustration and wastes time!
The most commonly used vacuum pumps run at one speed. Therefore, the pump is always driving toward the deepest vacuum level possible where they function optimally. Just because this is the sweet spot for your vacuum pump, doesn’t mean it’s the best vacuum level for your process.