Rocket Espresso R 9 Commercial Multi-Boiler Espresso Machine (Multi-Group Saturated Head Configuration, Independent 1.9L Coffee Boilers, 9.0L Service Boiler, 0.1°C PID Precision Digital Interface) Command high-volume specialty coffee lines, optimize barista-to-customer interaction, and lock in absolute extraction accuracy with the Rocket Espresso R 9. Masterfully engineered by industry pioneer Ennio Berti as a multi-boiler commercial flagship, this powerhouse is built to thrive in the most demanding, high-traffic café environments, specialty roastery tasting bars, and premium coffee programs. The R 9 features fully saturated group heads, with each group backed by its own dedicated 1.9-liter stainless steel coffee boiler. This multi-boiler layout is paired with an ultra-low chassis profile and advanced pressure transducers, completely eliminating thermal recovery lag and delivering repeatable, competition-level extractions shot after shot. Ennio Berti Saturated Group Design & Multi-Boiler Precision Independent Multi-Boiler Architecture: Completely isolates every brewing station to eliminate temperature cross-contamination. On the 2-Group model, two independent 1.9-liter stainless steel coffee boilers handle extractions under strict electronic PID regulation, while a massive 9.0-liter service boiler stands ready to deliver high-pressure dry steam. Thermally Fused Saturated Group Heads: Built with a premium commercial saturated layout where the heavy brass brew chambers are welded directly to their respective coffee boilers. This allows water to circulate continuously into the group heads, completely eliminating temperature drop or drift, even during relentless morning rushes. 0.1°C Digital PID Parameter Calibration: Individual digital control pads above each group head allow baristas to fine-tune extraction temperatures in precise 0.1-degree Celsius increments. The clear displays provide real-time parameter feedback alongside integrated digital shot timers for flawless quality control. Low-Profile HMI Framework & Lightning-Fast Steam Recovery Barista-Customer Interaction Profile: Engineered with a distinctively lowered chassis profile measuring just 497 mm tall. This intentional, low-profile architecture removes the traditional "stainless steel wall" barrier between the barista and the guest, fostering an open, conversational service environment that enhances the hospitality experience. Advanced Pressure Transducer Recovery: Rather than relying on slower mechanical pressure stats, the R 9 utilizes a sophisticated electronic pressure transducer to manage the massive service boiler. This technology actively tracks steam output and triggers lightning-fast element recovery, ensuring dry, high-velocity steam is always available. Ergonomic Lever-Operated Steam Valves: Designed for high-speed comfort, featuring smooth mechanical steam levers that engage instantly, replacing stiff turn-knobs and reducing wrist fatigue across long, multi-hour shifts. Automatic Portion Control & Heavy-Duty Italian Build Precision Volumetric Dosing: Streamlines barista workflow with automated portion control. Each group head features a multi-button micro-processor panel for custom volumetric programming, allowing baristas to pull single or double shots hands-free while texturing milk pitchers. Insulated Cool-Touch Steam Wands: Outfitted with dual-walled, stainless steel steam wands that remain cool to the touch during operation. This eliminates accidental skin burns and stops milk from baking onto the steel for fast, hygienic wipe-downs. Premium AISI 304 Stainless Steel Chassis: Hand-assembled in Milan, Italy, the R 9 features an incredibly durable exterior formed entirely from heavy-gauge, mirror-polished AISI 304 medical-grade stainless steel panels wrapped around a rigid structural steel skeleton. Technical Specifications Summary (2-Group Model) Feature / Metric Specification Brand / Model Line Rocket Espresso Milano — R 9 Commercial Flagship Series Mod