The Revvo tank features a new leakproof design that works very well. To fill it, there’s a funnel-like cone on a spring, inside the drip tip portion. You’ll need a fine-point bottle or glass dripper to fill it though; you can’t just pour juice in. Use the bottle to push down on the funnel cone and then squeeze. The bottom reservoir will fill up. It looks almost like an RDTA in design with the tank positioned under the coils.
To make the fill system work, you’re stuck with the proprietary drip tip. The conical fill port also acts as a spitback protector, which works well. I didn’t get any spitback with this tank.
The Revvo has adjustable top airflow with a stopper, so it doesn’t just spin freely. The airflow adjustment is smooth and easy to adjust, even when it’s on a mod. The tank has a 3.6 mL capacity, which isn’t bad, but a little on the small side. There’s also a 2 mL TPD version as well. When purchased in a kit, you will only get the stainless steel version but it’s also available in black and chrome when purchased separately.