Technical
Data
Approvals
UL and C-UL Listed. FM Approved.
(Refer to the Design Criteria Section.)
NYC under MEA 356-01-E
Maximum Working Pressure
175 psi (12,1 bar)
Pipe Thread Connection
1 inch NPT or ISO 7-R1
Discharge Coefficient
K = 25.2 GPM/psi
1/2
(362,9 LPM/bar
1/2
)
Temperature Ratings
165°F/74°C or 214°F/101°C
Finish
Natural Brass
Physical Characteristics
Frame . . . . . . . . . . . . . . Brass
Deflector . . . . . . . . . . . Bronze
Compression Screw . . . . . . . . .
. . . . . . . . . . . . Stainless Steel
Hook
. . . . . . . . . . . . . . Monel
Strut
. . . . . . . . . . . . . . Monel
Link Assembly . . . . Solder, Nickel
Button . . . . . . . . . . . . . . Brass
Sealing Assembly . . . . . . . . . .
. . . . .
Beryllium Nickel w/Teflon*
Ejection Spring . . . . . . . . Inconel
Patents
U.S.A.
Patent
Numbers 4,580,729
5,829,532, and 6,059,044 may be ap-
plicable to the Model ESFR-25. Other
patents are pending.
Operation
The fusible link assembly is comprised
of two link halves which 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.
Design
Criteria
UL AND C-UL LISTING CRITERIA
The Model ESFR-25 (SIN TY9226)
Sprinklers are UL and C-UL Listed as
“Early Suppression Fast Response
Sprinklers” for installation per NFPA 13
or other applicable NFPA standards.
UL AND C-UL SPECIFIC
APPLICATION LISTING CRITERIA
The Model ESFR-25 (SIN TY9226)
Sprinklers are UL and C-UL Listed as
“Specific Application Early Suppres-
sion Fast Response Sprinklers” for use
in in accordance with NFPA 13 to pro-
tect single-, double-, and multiple row
rack storage and palletized and solid
pile storage (no open containers or
solid shelves) of Class I, II, III, and IV
commodities encapsulated or unen-
capsulated and cartoned Group A un-
expanded plastics when installed with
the following storage and ceiling
heights and minimum design pres-
sures:
Maximum Maximum
Minimum
Storage
Ceiling
Flowing
Height,
Height,
Pressure,
Ft. (m)
Ft. (m)
psi (bar)
40 (12,2)
45 (13,7)
40 (2,7)
35 (10,7)
40 (12,2)
25 (1,7)
30 (9,1)
35 (10,7)
20 (1,4)
25 (7,6)
30 (9,1)
15 (1,0)
When applying the specific application
listing criteria, the Model ESFR-25
Sprinklers should be installed using
the same installation obstruction and
construction criteria, as well as deflec-
tor-to ceiling distances, as is applica-
ble for Early Suppression Fast Re-
sponse Sprinklers having a nominal
K-Factor of 25.2 per NFPA 13.
FM APPROVAL CRITERIA
The Model ESFR-25 (SIN TY9226)
Sprinklers are FM Approved as “Early
Suppression Fast Response Sprin-
klers” for installation per the applicable
FM Loss Prevention Data Sheets.
Page 2 of 4
TFP312
1-Frame
2-Deflector
3-Compression Screw
4-Hook
5-Strut
6-Link Assembly
7-Button
8-Sealing Assembly
9-Ejection Spring
FIGURE 1, MODEL ESFR-25 EARLY SUPPRESSION FAST RESPONSE PENDENT SPRINKLER
* Registered Trademark of DuPont
OBSOLETE
