| Model | Maximum Steam Pressure | Maximum Water Pressure | Programmable Set Point Range | Programmable Thermal Disinfection Range | Minimum Recirculation Flow |
| DFS1540 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
5 gpm (19 lpm) per DRV |
| DFS15DW40 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
5 gpm (19 lpm) per DRV |
| DFS3540 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
5 gpm (19 lpm) per DRV |
| DFS35DW40 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
5 gpm (19 lpm) per DRV |
| DFS5050 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
10 gpm (38 lpm) per DRV |
| DFS50DW50 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
10 gpm (38 lpm) per DRV |
| DFS9080 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
10 gpm (38 lpm) per DRV |
| DFS90DW80 | 15 psig (1 barg) |
150 psig (10.3 barg) |
81-158°F (27-70°C) |
158-185°F (70-85°C) |
10 gpm (38 lpm) per DRV |
The Digital-Flo Semi Instantaneous Steam/Water Heater is a pre-piped packaged water heating solution with an integral Brain® Digital Recirculation Valve (DRV) for hot water system water temperature control.
Engineered exclusively for continuously recirculated hot water systems, The Brain improves system performance and safety by delivering a consistent pre-set temperature to the points of use.
Water is heated above Legionella survival temperatures on every recirculation cycle. A separate steam control valve is not required. User safety and overall system health is maintained by a series of programmable temperature alerts, onboard operational self-diagnostics, and a thermal disinfection option.
Digital-Flo is available with single wall or double wall heat exchangers in 4 standard sizes each with a parallel/redundant option and can be customized to suit.
