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Model LD — 11.2 K-factor
Large Drop Upright Sprinklers, Standard Response
Specific Application Control Mode
General
Description
The 11.2 K-factor, Model LD Upright
Large Drop Sprinklers are glass bulb
type automatic sprinklers. They are a
type of specific application control
mode sprinkler intended for use with
National Fire Protection Association
"large drop sprinkler" installation crite-
ria for the protection of high piled stor-
age. The LD Sprinklers can provide a
higher level of protection than stand-
ard spray sprinklers and, in some
cases, they can provide an economic
advantage by eliminating in-rack sprin-
klers.
WARNING
The 11.2 K-factor, Model LD Large
Drop Upright Sprinklers described
herein must be installed and main-
tained in compliance with this docu-
ment, as well as with the applicable
standards of the National Fire Protec-
tion Association, in addition to the
standards of any other authorities hav-
ing jurisdiction. Failure to do so may
impair the performance of these de-
vices.
The owner is responsible for maintain-
ing their fire protection system and de-
vices in proper operating condition.
The installing contractor or manufac-
turer should be contacted with any
questions.
IMPORTANT
Always refer to Technical Data
Sheet TFP700 for the "INSTALLER
WARNING" that provides cautions
with respect to handling and instal-
lation of sprinkler systems and com-
ponents. Improper handling and in-
stallation can permanently damage
a sprinkler system or its compo-
nents and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.
Page 1 of 4
Sprinkler
Identification
Number
TY5153 - Upright, 11.2 K
TY5153 is a redesignation for C5153.
Technical
Data
Approvals
UL and C-UL Listed. NYC Approved
under MEA 289-04-E.
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
3/4 inch NPT or ISO 7-R3/4
Discharge Coefficients
1/2
K = 11.2 GPM/psi
1/2
(161,3 LPM/bar
)
Temperature Ratings
155°F/68°C,
200°F/93°C,
286°F/141°C
Finish
Natural Brass
Physical Characteristics
Frame . . . . . . . . . . . . . Bronze
Button . . . . . . . . . . . . . Bronze
Sealing Assembly . . . . . . . . . . .
. . . . . . Beryllium Nickel w/Teflon
Bulb . . . . . . . . Glass (5 mm dia.)
Compression Screw . . . . . Brass
Deflector . . . . . . . . . . . . Bronze
DuPont registered trademark.
JANUARY, 2005
Design Criteria
The 11.2 K-Factor, Model LD (TY5153)
Upright Large Drop Sprinklers are only
for use with National Fire Protection
Association "large drop sprinkler" in-
stallation criteria.
and
Operation
The glass bulb contains a fluid that
expands when exposed to heat. When
the rated temperature is reached, the
fluid expands sufficiently to shatter the
glass bulb allowing the sprinkler to ac-
tivate and flow water.
TFP335
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