La Marzocco Linea PB Commercial Espresso Machine (4 Group)
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The four-group Linea PB is specified for the highest-throughput sites La Marzocco serves. Built around the saturated group head — a thermosiphon design keeping each brew group in constant thermal equilibrium with the coffee boiler — it eliminates the heat loss that makes lesser machines drift shot to shot. Two fully independent PID-controlled boilers mean it steams and brews simultaneously with no thermal compromise, across all four groups.
Key Features
- Saturated Group Heads: water never leaves the coffee boiler during brewing, so every group is always at temperature no matter how many are firing at once.
- Dual Independent Boilers: a 6.8 L coffee boiler and a 15 L steam boiler, each with its own PID. Three or more baristas on milk continuously never touch brew-side stability.
- Dual PID Temperature Control: set brew temperature and steam pressure independently from the digital display.
- Digital Display: temperature readout, shot timers, flow pulse counter and intuitive programming.
- SmartSteam (optional): adds a temperature sensor to the steam wand that cuts pressure automatically when the milk hits your target.
- Eco / Standby Mode: scheduled standby to cut energy draw outside service hours.
Choosing your configuration
- Auto Volumetric (AV): programmable volumetric doses per group with flow-meter control. At four groups this is the practical minimum for consistency.
- Auto Brew Ratio (ABR): adds integrated scales in the drip tray. Brew by volume, by mass, or by brew ratio — the biggest single lever on consistency across a four-group bar with rotating staff.
- Mechanical Paddle (MP): a manual paddle per group giving the barista direct control over pre-infusion and flow.
Ideal For
- Stadiums, airports and transit hubs
- Large campus, hospital and corporate coffee programmes
- Flagship cafés running four or more baristas through a sustained peak
- Hotel and conference venues serving at banquet pace
Requires a dedicated 50 A circuit and careful counter planning at 47 in wide. Looking for per-group temperature control? That is the Linea PBX.
| Boiler system | Dual independent boilers |
|---|---|
| Coffee boiler | 6.8 l (shared, saturated groups) |
| Steam boiler | 15 l |
| Number of groups | 4 |
| Group head type | Saturated (thermosiphon) |
| Temperature control | Dual pid (coffee and steam) |
| Available configurations | Av (auto-volumetric), abr (auto brew ratio with scales), mp (mechanical paddle) |
| Integrated scales | ✓ on abr (drip tray mounted) |
| Doses per group | 4 plus continuous |
| Display | Digital - temperature, shot timers, flow pulse counter |
| Smartsteam | Optional |
| Eco / standby mode | ✓ |
| Steam wands | 2 (independent control) |
| Hot water tap | ✓ |
| Brew pressure | 9 bar (adjustable) |
| Water supply | Direct plumbed (3/8 in male compression) |
| Line pressure required | 45-80 psi |
| Water flow required | 2 gpm / 8 lpm |
| Drain | 3/4 in flexible drainline, min 0.25 in/ft slope |
| Pump | External motor-driven, set to 45 psi |
| Voltage | 208-240 vac, 1 phase, 60 hz |
| Total power | 8000 w |
| Amperage | 37 a (50 a service) |
| Width | 119 cm (47 in) |
| Depth | 58 cm (23 in) |
| Height | 53 cm (21 in) |
| Weight | 117 kg (258 lb) net / 142 kg (312.4 lb) operating |
| Made in | Florence, italy |
| Av (auto volumetric) | The machine automatically stops the shot based on a preset volume of water. |
| Abr (auto brew ratio) | The machine stops the shot on the weight of espresso in the cup, using built-in scales. |
| Mp (mechanical paddle) | A manual paddle per group replaces the volumetric keypad, giving direct control over pre-infusion and flow. |
La Marzocco Linea PB Commercial Espresso Machine (4 Group)
