Model ESFR-34
33.6 K-factor Pendent Sprinklers
Early Suppression, Fast Response
Page 1 of 4
DECEMBER 2019
TFP338
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
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
installation 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.
Worldwide
Contacts
www.tyco-fire.com
Technical
Data
Approvals
FM Approved
Finish
Natural Brass
Physical Characteristics
Frame � � � � � � � � � � � � � � � � � � � � � � � � � � � � �Brass
Deflector � � � � � � � � � � � � � � � � � � � � � � � � � �Bronze
Compression Screw � � � � � � � � � � Stainless Steel
Hook � � � � � � � � � � � � � � � � � � � � � � � � � � � � MONEL
Strut� � � � � � � � � � � � � � � � � � � � � � � � � � � � � MONEL
Link Assembly � � � � � � � � � � � � � � � � Solder, Nickel
Button � � � � � � � � � � � � � � � � � � � � � Stainless Steel
Sealing Assembly � �Beryllium Nickel w/TEFLON
Additional Technical Data
See Table A for additional technical data�
Operation
The fusible link assembly is com-
prised of two link halves that are joined
together by a thin layer of solder� When
the rated temperature is reached, the
solder melts and the two link halves
separate, activating the sprinkler and
flowing water�
NOTICE
The Model ESFR-34 Sprinklers
described herein must be installed
and maintained in compliance with this
document, as well as with the applica-
ble standards of FM Global, in addi-
tion to the standards of any authorities
having jurisdiction. Failure to do so
may impair the performance of these
devices.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
In all cases, the appropriate FM instal-
lation standard, or other applicable
standard, must be referenced to ensure
applicability and to obtain complete
installation guidelines. The general
guidelines in this technical data sheet
are not intended to provide complete
installation criteria.
Sprinkler
Identification
Number
See Table A for sprinkler identification
number�
General
Description
TYCO Model ESFR-34 Pendent Sprin-
klers are Early Suppression, Fast
Response Sprinklers having a nominal
K-factor of 33�6 (See Figure 1)� They are
suppression-mode sprinklers that are
especially advantageous as a means of
eliminating the use of in-rack sprinklers
when protecting high-piled storage�
The Model ESFR-34 Sprinklers are pri-
marily used for ceiling-only sprinkler
protection of (but not limited to) the
following storage applications:
• most encapsulated or non-encap-
sulated common materials including
cartoned, unexpanded plastics
• uncartoned (exposed) expanded
plastics in accordance with FM
Global standards
• some storage arrangements of
rubber tires, roll paper, flammable
liquids, and aerosols
For more specific criteria, refer to Table
B as well as the applicable design
standard�
The Model ESFR-34 can protect a
storage arrangement of 50 ft (15,2 m)
with a ceiling height of 55 ft (16,8 m)
without requiring in-rack sprinklers�
In addition, it can be installed with a
maximum centerline of thermal sensing
element-to-ceiling distance of 17 in�
(432 mm)�
