The Vibiemme Double Boiler Domobar Version 4 features several improvements over their last double boiler machine. The main improvement was that they’ve managed to control the boilers in a way that gives the machine the same performance as the prior version without pulling more than 15 Amperes. The Domobar Version 4 has improved the insulation of both boilers to give you better control.
One boiler is for the espresso, and the other is for steam. Since there are two, they operate independently. This allows you to froth milk at the same time that you are pulling extractions without effecting the quality of either. It also allows back-to-back extractions without ant thermal variation. You can operate this smaller commercial machine non-stop without any degradation in the quality of your shots. The steam boiler is a 1.9 liters and the shot boiler is 0.5 liters. Both are copper.
The Vibiemme Double Boiler Domobar Version 4 has a 2.1 liter water reservoir, which allows you to make about 20 double-shots between refills. Refills are easy; simply pour bottled spring water into the water tank from above. This will not disrupt your service for more than a minute.
The Vibiemme Double Boiler Domobar Version 4 also features a commercial-grade rotary vane pump that allows the machine to be connected to a direct water line (instead of using this reservoir) by simply changing the position of a lever under the machine.
While the drip tray is easy to remove (for emptying and cleaning), it can also be connected to a drain line so that you needn’t worry about it if you are doing a prolonged service. You can purchase tubing to connect to the drain at any hardware store, should you want to do this.
All of the Vibiemme espresso machines have a heavy-duty FAEMA E61 grouphead, which maintains an active water flow between the boiler and the group so as to keep the brewing temperature constant – equal to the original water temperature.
The Vibiemme Double boiler Domobar features professional grade brass portafilters that fit the E61 group. You’ll get a single-shot and a double-shot basket, and a blind filter for standard backwashing. The machine comes with a plastic coffee scoop and a plastic tamper. It’s recommended that you get a real tamper to use with this REAL machine.