The Model F4FR-NF Non-Ferrous Concealer is a quick response standard coverage sprinkler that uses a 155°F (68°C) 3mm diameter glass bulb in a concealed sprinkler frame with a drop-down deflector. This assembly is recessed into the ceiling and finished with a flat cover plate. The push-on/thread off cover plate provides ½” (13mm) of cover adjustment.
The cover plate is attached to the skirt using 135°F (57°C) ordinary temperature classification solder. When the ceiling temperature rises, the solder holding the cover plate fuses, releasing the plate and exposing the sprinkler.
As the temperature increases, the fluid within the glass bulb expands. Upon reaching activation temperature, the glass bulb shatters and opens the waterway causing the deflector to drop into position to properly distribute the water.
The Reliable Model F4FR-NF Non-Ferrous Concealer is designed specifically for MRI rooms. The sprinkler assembly was tested in a laboratory with a magnetic field of 6 Tesla. The test exposed the sprinklers to magnetic fields and field gradients that exceed a standard peripheral MRI room environment. There was no recorded influence of the magnetic field on the sprinklers.
The Model F4FR-NF Non-Ferrous Concealer is a quick response standard coverage sprinkler that uses a 155°F (68°C) 3mm diameter glass bulb in a concealed sprinkler frame with a drop-down deflector. This assembly is recessed into the ceiling and finished with a flat cover plate. The push-on/thread off cover plate provides ½” (13mm) of cover adjustment.
The cover plate is attached to the skirt using 135°F (57°C) ordinary temperature classification solder. When the ceiling temperature rises, the solder holding the cover plate fuses, releasing the plate and exposing the sprinkler.
As the temperature increases, the fluid within the glass bulb expands. Upon reaching activation temperature, the glass bulb shatters and opens the waterway causing the deflector to drop into position to properly distribute the water.
The Reliable Model F4FR-NF Non-Ferrous Concealer is designed specifically for MRI rooms. The sprinkler assembly was tested in a laboratory with a magnetic field of 6 Tesla. The test exposed the sprinklers to magnetic fields and field gradients that exceed a standard peripheral MRI room environment. There was no recorded influence of the magnetic field on the sprinklers.
| Manufacturer | Reliable Automatic Sprinkler Company |
|---|---|
| Brand | |
| Condition | New |
| Unit of Measurement | EA (Each) |
| Production Status | Active |
| Style | Concealed |
| K-Factor | 5.6 (80 metric) |
| Max Working Pressure | 175 psi (12 bar) |
| Finish | Chrome |
| Sensitivity | Quick Response |
| Temperature Rating | 155°F (68°C) |
| Manufacturer | Reliable Automatic Sprinkler Company |
|---|---|
| Brand | |
| Condition | New |
| Unit of Measurement | EA (Each) |
| Production Status | Active |
| Style | Concealed |
| K-Factor | 5.6 (80 metric) |
| Max Working Pressure | 175 psi (12 bar) |
| Finish | Chrome |
| Sensitivity | Quick Response |
| Temperature Rating | 155°F (68°C) |
