|
FireDot.com |
Sprinkle Accessories & Standpipe Equipment
| SP135 |
| 135 deg. Pendent Bulb Brass Sprinkler Head |
FEATURES
listed and approved. Rugged frame, expanded wrench area. Tapered
orifice prevents turbulence, provides unifrom distribution throughout all
pressures. Unique deflector accounts for high degree of water atomization
associated with Firematic sprinklers. Operates at full volume approximately
one-tenth of a second after pressure is released.
| SIZE | |
| Height: | 2" (not including threaded section). Exends approximately 2 17/32" from ceiling surface including 1/2" . |
| Width: | 1 3/4" |
| Threads: | 1/2" Thread
Type: NPT |
| Orifice: | 1/2" nominal ( 7/16" actual) |
| RATINGS | |
| Temperature: | Activation:
155° F / 68° C
Tested down to -40°
F by UL. Note: the bulb
does not suffer any ill effects from cold temperatures - the glycerin
inside will not allow the bulb to freeze. If one activates in cold
weather, it's most likely due to the high pressures that result from water
freezing in a fixed volume (e.g., the pipe). |
| Scope: | Coverage
Area: 10'
x 10' |
| Miscellaneous: | Bulb Liquid:
Glycerin (a.k.a.
glycerol, C3H8O3) K Factor: 5.7 |
| More flow data is available upon request. | |
| INSTRUCTIONS | |
| Installation Instructions: | Notes on Installation
|
| PRINCIPLES OF OPERATION | |
| Background: | The glycerin inside the bulb has a higher coefficient of thermal expansion than the glass bulb. Thus, when heated, it expands faster than the glass, so the glass shatters and the water pressure pushes the retainer out of the way. |
