Std. Response - Std. Coverage
Upright, Pendent, and
Recessed Pendent Sprinklers
Model LD-2, K=2.8, 1/2"NPT
GENERAL DESCRIPTION
The Star Model LD-2, 2.8 K-Factor, Upright, Pendent,
and Recessed Pendent Sprinklers are standard response
- standard coverage, solder type spray sprinklers de-
signed for use in light hazard, commercial occupancies
such as churches, restaurants, hospitals, museums, of-
fices, etc.
The recessed version of the Model LD-2, intended for use
in areas with a finished ceiling, uses a two-piece #2085
Recessed Escutcheon. The #2085 provides 1/2 inch (12,7
mm) of recessed adjustment or up to 3/4 inch (19,1 mm)
of total adjustment from the flush pendent position. The
adjustment provided by the Recessed Escutcheon re-
duces the accuracy to which the fixed pipe drops to the
sprinklers must be cut.
As an option the Model LD-2 Pendent Sprinkler can be
used with the self-adjusting Starmist Recessed Escutch-
eon detailed in Product Data Sheet 1-1.2.91. The Star-
mist Recessed Escutcheon provides up to 5/8 inch (15,9
mm) of vertical adjustment, and it is spring-loaded to com-
pensate for ceiling movement so as to help prevent un-
sightly gaps.
Wax and lead coatings are utilized to extend the life of
copper alloy sprinklers beyond that which would other-
wise be obtained when exposed to corrosive atmos-
pheres. Although wax and lead coated sprinklers have
passed the standard corrosion tests of the applicable ap-
proval agencies, the testing is not representative of all
possible corrosive atmospheres. Consequently, it is rec-
ommended that the end user be consulted with respect to
the suitability of these corrosion resistant coatings for any
given corrosive environment. The effects of ambient tem-
perature, concentration of chemicals, and gas/chemical
velocity, should be considered, as a minimum, along with
the corrosive nature of the chemical to which the sprin-
klers will be exposed.
WARNINGS
The Model LD-2 Sprinklers described herein must be in-
stalled and maintained in compliance with this document,
as well as with the applicable standards of the National
Fire Protection Association, in addition to the standards
of any other authorities having jurisdiction. Failure to do
so may impair the integrity of these devices.
The owner is responsible for maintaining their fire protec-
tion system and devices in proper operating condition.
The installing contractor or sprinkler manufacturer should
be contacted relative to any questions.
OPERATION
A bronze tube sealed by two stainless steel balls holds a
fusible alloy. When the rated temperature is reached, the
alloy melts, the balls are forced toward each other releas-
ing the tension mechanism, which then allows the sprin-
kler to activate and flow water.
TECHNICAL DATA
Approvals
UL and ULC Listed. NYC Approved.
(Refer to Table A. The approvals apply only to the service
conditions indicated in the Design Criteria section.)
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
1/2 inch NPT
Discharge Coefficient
K = 2.8 GPM/psi
1/2
(40,3 LPM/bar
1/2
)
Temperature Ratings
135°F/57°C, 165°F/74°C, 212°F/100°C,
280°F/138°C, or 360°F/182°C
(Refer to Table A)
Finishes
Sprinkler: White Polyester, Black Polyester,
Chrome Plated, Natural Brass, Wax Coated, Lead Coated,
Wax over Lead Coated (Refer to Table A)
Recessed Escutcheon: White Coated, Black Coated,
Chrome Plated, Bright Brass Plated
(Other colors are available on request.)
Physical Characteristics (Ref. Figure 1)
The Model LD-2 utilizes a dezincification resistant (DZR)
bronze frame with a brass deflector. The waterway is
sealed with Teflon
gasketed brass button, and the fusible
assembly is constructed of bronze and stainless steel
components.
SIN S1818
Upright
SIN S1819
Pendent
Shown With
#2085 Recessed
Escutcheon
DuPon
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Regi
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Trad
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Customer Service/Sales: Tel: (800) 558-5236 • Fax: (414) 570-5010
Technical Services: Tel: (800) 381-9312 • Fax: (800) 791-5500
3-01
1-1.2.70
TYCO FIRE PRODUCTS
OBSOLETE
