Coffee Machine

Imported Equipment

Specification	Single-Group (1-Group)	Double-Group (2-Group)
Ideal Volume	Low to Medium (50–200 Cups/Day)	Medium to High (200–500+ Cups/Day)
Max Shots Per Cycle	1 (or 2 Simultaneously)	2 (or 4 Simultaneously)
Boiler Capacity	Small (Typically 1.8 L to 6 L)	Large (Typically 8 L to 14 L)
Number of Steam Wands	1 (Usually)	2 (Standard)
Wattage / Power	Lower (1,200 W to 2,900 W)	Higher (2,700 W to 5,000 W)
Electrical Requirement	Often 120V or 220V Single-Phase	Usually 220V/240V or 380V/415V Three-Phase (For High Power)
Footprint / Size	Compact (Designed to Save Counter Space)	Large (Requires Significant Counter Space)
Workflow	Linear (One Barista, One Shot at a Time)	Parallel (Two Baristas Can Work Simultaneously)
Heat Recovery	Slower, Especially After Heavy Use of Hot Water/Steam.	Fast Due to the Large Boiler and Higher Power Element.

Features of Doble Group Coffee Machine

Dual Group Heads: The defining feature, allowing for parallel workflow.
Dual Steam Wands: Typically found on a 2-group machine, enabling a barista to steam milk for two drinks at once, or for one barista to be pulling a shot while the other is steaming.
Hot Water Dispenser: A separate spout for dispensing hot water for Americanos, tea, etc.
Heat Exchanger (HX) or Dual Boiler System: HX: One boiler for steam/hot water, with an internal tube (heat exchanger) to heat the brewing water. Good for high volume.
Dual Boiler: Separate boilers for the steam/hot water and the brew water, offering ultimate temperature precision (often an upgrade).
Automatic Water Refill (A.W.R.): The boiler automatically senses and refills water, preventing the heating element from burning out.
Built-in Volumetric Pump (Rotary Pump): Provides quiet and consistent pressure and allows the machine to be plumbed directly into the main water line.
Gauges: Separate pressure gauges for boiler pressure (steam) and pump/brew pressure (extraction).
PID Control (On Some Models): Digital control for precise adjustment and stability of the water temperature.