The working principle of the glass ball sprinkler: The glass ball is filled with organic solution with high thermal expansion coefficient. At room temperature, the outer shell of the ball can withstand a certain pressure to ensure the sealing performance of the sprinkler. When a fire occurs, the organic solution expands due to the increase in temperature, until the glass body cannot withstand it, it will break, and the ball seat and seal will be washed away by the water flow after losing support, thus starting to spray fire.
The 11.2 K-factor, FRD005 Sprinklers were subjected to full-scale, high-piled storage fire tests to qualify their use in lieu of 5.6 or 8.0 K-factor standard spray sprinklers for the protection of high-piled storage.
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Sealing Assembly Glass bulb 5mm. . . . . . . . . . . . . . . .Glass
Compression Screw . . . . . . . . . . . . . . . . . . . . . .Brass
Deflector . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
TABLE A | |
MODEL | FRD004 |
WORKING PRESSURE | 175 psi (12,1 bar) |
CONNECTION | 3/4’’ BSP (NPT OPTIONAL) |
K-FACTOR | 11.2 GPM/psi½ (161,4 LPM/bar½) |
TEMPERATURE RATING
| 155 ºF (68 ºC) 200 ºF (93 ºC) 286 ºF (141 ºC) |
INSTALLATION | Upright |
TABLE B | |
MODEL | FRD005 |
WORKING PRESSURE | 175 psi (12,1 bar) |
CONNECTION | 3/4’’ BSP (NPT OPTIONAL) |
K-FACTOR | 11.2 GPM/psi½ (161,4 LPM/bar½) |
TEMPERATURE RATING
| 155 ºF (68 ºC) 200 ºF (93 ºC) 286 ºF (141 ºC) |
INSTALLATION | Pendent |
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