Manufactured by: Central Sprinkler Company
451 North Cannon Avenue, Lansdale, Pennsylvania 19446
I M
A
O
P
T
Attic Sprinklers
™
Specific Application
• Back to Back™
• Single Directional™
• HIP™
The other cost reduction is in the new
Listing of BlazeMaster CPVC for Attic
spaces feeding the wet system
sprinklers below the ceiling.
Traditionally BlazeMaster CPVC has
been used on the lower floors in the
joist space above a ceiling that does not
require sprinklers. The cost of using
CPVC on those floors can now be
translated to the upper floor even if
sprinklers are required in the attic.
There are three (3) models of Attic Sprin-
klers™, Back to Back™ (dual directional), a
Single Directional™ and a Hip™ sprinkler.
The Back to Back™ and Single Direc-
tional™ sprinklers have three separate
versions that are used for different roof
pitches. The pitches can vary from a
minimum of 4 in 12 to a maximum of
12 in 12.
The Back to Back™
(dual directional)
The Back to Back™ Attic Sprinkler™,
named so because it performs like two
sidewall sprinklers placed back to back
with one operating element, throws a
narrow but long pattern. The narrow
spacing along the ridge serves two
purposes. The response time is
reduced by having the sprinklers no
farther than 6'-0" apart and the spray
No. A-1.0
The Attic Sprinklers™ are the evolution of
fire sprinklers for attics. The Attic Sprin-
klers™ provide the best fire protection in
an attic while saving cost by using
extended coverage spacing. The Attic
Sprinklers™ have undergone the most
extensive fire testing ever done for attics
and are allowed for use under their
specific application guidelines by U.L. and
NFPA.
The Attic Sprinklers™ are the first sprin-
klers to be:
• Listed for extended coverage in combus-
tible construction.
• Full-scale fire tested in both wet and dry
system scenarios.
• Full-scale tested, for Listing in wood
truss construction.
• Listed for specific pitches of roof slope.
The Attic Sprinklers™ provide the best
level of protection and control cost by
eliminating the need for additional
sprinklers and the associated cost. There
is just one branch line along the ridge for
the entire building unless there is a need
for single directional or hip sprinklers. In
that case, there is still only one line in
each area. For example, a system in a
60'-0" wide attic would use 5 branch lines
to cover the main portion of the building
and several off-set branch lines to cover
the hip area. With the attic sprinklers,
there is just one line down the ridge and
one down each slope of the hip. This is
approximately 80% less pipe that needs
to be installed. This saves the cost of the
pipe, fittings, hangers, and associated
labor for three branch lines. Also the
volume of the system is reduced. This
could reduce the size of the dry pipe valve
or allow the 60 second requirement to be
met without an accelerator.
Response: Quick
Thread:
1
⁄
2
"
(12.7 mm)
or
3
⁄
4
"
(19.1 mm)
N.P.T.
(see chart)
Temperature: 200
°
F Bulb or 212
°
F Link
(see chart)
Listing: U.L., U.L.C.
Maximum Working Pressure:
175 psi
(12.07 bar)
Factory Hydro Test: 100% at 500 psi
(34.48 bar)
Standard Finish: brass
Length: 3"
(76.2 mm)
maximum*
Weight: 5 oz.
(142 grams)
maximum*
*See page 2 for exact dimensions.
Patent Pending
Technical
Data
Models: BB1-
17
⁄
32
, BB2-
17
⁄
32
, BB3-
17
⁄
32
BB1, BB2, BB3
SD1, SD2, SD3
HIP
Orifice Size:
1
⁄
2
"
(12.7 mm)
or
17
⁄
32
"
(13.5 mm)
(see chart)
K-Factor:
1
⁄
2
" = 5.6
(80.08)
Nominal
17
⁄
32
" = 7.8
(111.54)
Nominal
(see chart)
(continued on page 10)
1
⁄
2
" or
17
⁄
32
"
Orifice
Automatic
Sprinkler
ATTIC
Model
K-Factor Thread Temp.
°
F Orifice
BB1
17
⁄
32
7.8
3
⁄
4
200
°
bulb
17
⁄
32
BB2
17
⁄
32
7.8
3
⁄
4
200
°
bulb
17
⁄
32
BB3
17
⁄
32
7.8
3
⁄
4
200
°
bulb
17
⁄
32
BB1
5.6
1
⁄
2
212
°
link
1
⁄
2
BB2
5.6
1
⁄
2
212
°
link
1
⁄
2
BB3
5.6
1
⁄
2
212
°
link
1
⁄
2
SD1
5.6
1
⁄
2
212
°
link
1
⁄
2
SD2
5.6
1
⁄
2
212
°
link
1
⁄
2
SD3
5.6
1
⁄
2
212
°
link
1
⁄
2
HIP
5.6
1
⁄
2
200
°
bulb
1
⁄
2
Product
Description
2-97
OBSOLETE
