| Model | Flow Capacity | Hot Water Outlet Connection Size | Use |
| 215 | 11 gpm (42 lpm) | 1/2″ (15 mm) | Individual point of use or groups of fixtures |
| 320 | 24 gpm (91 lpm) | 3/4″ (20 mm) | Groups of fixtures |
| 320D | 24 gpm (91 lpm) | 3/4″ (20 mm) | Groups of fixtures |
| 320D-FMC-S | 24 gpm (91 lpm) | 3/4″ (20 mm) | Groups of fixtures |
| 425 | 49 gpm (185 lpm) | 1-1/4″ (32 mm) | Groups of fixtures |
| 425D | 49 gpm (185 lpm) | 1″ (25 mm) | Groups of fixtures |
| 425D-FMC-S | 49 gpm (185 lpm) | 1″ (25 mm) | Groups of fixtures |
Armstrong’s thermostatic mixing valves are designed specifically for use in non-return, “dead leg” applications.
The range of products provides accurate water temperature control for individual point of use and groups of fixtures in applications with diverse flow requirements.
