Models PB-430 & PB-330 Features • • • • • • • • • • • • • • • • Model PB-330 is a single, digitally controlled brewer. It includes (1) radiant heat, air-insulated, ACS-1 Shuttle®. Model PB-430 is a twin, digitally controlled brewer. It includes (2) radiant heat, air-insulated 1.5 gallon (5.7L), ACS-1 Shuttles®. The ACS-1 Shuttle® is the classic 1.5 gallons (5.7L) stainless steel, air insulated, radiant heat Shuttle®.