Technical
Data
Approvals
The Issue A and B Window Type Ex-
posure Protection Sprinklers are UL
Listed and FM Approved.
Maximum Working Pressure
175 psi (12,1 bar).
Discharge Coefficient
See Table A.
Thread Connection
See Table A.
Physical Characteristics
Body
. . . . . . . . . . . . . Bronze
Design
Criteria
Nozzle Placement. Exposure Protec-
tion Sprinkler Systems must be de-
signed, installed, and calculated in ac-
cordance with NFPA 13. Figures 2 and
3 provide nominal spray patterns.
Main Pipeline Strainers. The use of a
main pipeline strainer per NFPA 13 is
required for sprinklers having a nomi-
nal K-factor less than 2.8 (40,3).
Installation
Issue A and B Window Type Exposure
Protection Window Sprinklers must be
installed in accordance with the follow-
ing instructions:
NOTE
A leak tight 1/2 inch NPT sprinkler joint
should be obtained with a torque of 7
to 14 ft.lbs. (9,5 to 19,0 Nm). A maxi-
mum of 21 ft. lbs. (28,5 Nm) of torque
may be used to install sprinklers with
1/2 NPT connections. A leak tight 3/4
inch NPT nozzle joint should be ob-
tained with a torque of 10 to 20 ft.lbs.
(13,4 to 26,8 Nm). A maximum of 30 ft.
lbs. (40,7 Nm) of torque may be used
to install sprinklers with 3/4 NPT con-
nections. Higher levels of torque may
distort the sprinkler inlet and cause
leakage or impairment of the sprin-
klers.
Step 1. With pipe thread sealant ap-
plied to the pipe threads, hand tighten
the sprinkler into the sprinkler fitting.
Step 2. Tighten the sprinkler into the
sprinkler fitting using an adjustable
crescent wrench. With reference to
Figure 1 the adjustable crescent
wrench is to be applied to wrench flats.
Page 2 of 4
TFP835
FIGURE 1
ISSUE A AND B WINDOW TYPE EXPOSURE PROTECTION SPRINKLERS
NOMINAL DIMENSIONS
ISSUE A — 1/4, 5/16, and 3/8 INCH ORIFICE
ISSUE B — 1/2 and 5/8 INCH ORIFICE
ISSUE B — 3/4 INCH ORIFICE
FLATS
25/32"
(19,8 mm)
ACROSS
WRENCH
NOMINAL MAKE-IN
7/16" (11,1 mm)
(36,5 mm)
1-7/16"
ORIFICE SIZE
STAMPED ON
1/2" NPT
WRENCH
FLAT
25/32"
(19,8 mm)
1-11/16"
(42,9 mm)
2-7/8"
(73,0 mm)
(47,6 mm)
1-3/16"
(69,9 mm)
2-3/4"
7/16"
(11,1 mm)
NOMINAL
MAKE-IN
1/2"
NPT
ORIFICE SIZE
INDICATED ON
DEFLECTOR
ACROSS WRENCH
FLATS
1-1/8" (28,6 mm)
1/2"
ORIFICE
ONLY
(77,8 mm)
3-1/16"
ORIFICE SIZE
INDICATED ON
WRENCH FLAT
(82,6 mm)
3-1/4"
NOMINAL
MAKE-IN
(12,7 mm)
1/2"
(47,6 mm)
1-3/16"
3/4"
NPT
FLATS
1-3/8" (34,9 mm)
ACROSS WRENCH
ORIFICE
5/8" or 3/4"