I installed a Briggs Vacuity seven years ago and it worked as advertised....until recently. Leaks.leaks-leaks!
The inner tank began to leak into the outer tank until the water found it's way out the flush handle hole. As a quick-fix I notched the inner tank and siliconed the plastic nut around the flush handle hole. This worked until I FINALLY heard from Brigg's tech MRr.Don. My many calls to Briggs were not returned, so I resorted to e-mail which fell short of a real conversation. Don advised I disassemble the tank and silicone a 3/8" bead around all through-tank fittings, then reassemble the tank. This I carefully accomplished and allowed to dry for three days prior to mating tank to bowl. Now the leaks started from the tank bolts until I tightened them far beyond what I felt prudent. After that leak was fixed, (whew!) the toilet still leaked from the inner to outer tanks....and developed yet another leak from the fill nipple below the tank. Tightening that fitting did not stop the leak. After three weeks of trying to save my Briggs Vacuity I took it out to the garbage and hammered it to pieces.
I felt that Brigg's Customer Service was unresponsive and unprofessional, both in their "try this-try that" attitude and in their poor support. I just installed an American Standard Champion 4. It has a 10 year warranty. Bye-bye Vacuity.... and Briggs.
Beach Park, Illinois