
Technical Data:
Classification
Sprinkler
Temperature Link
Color
Frame
Color
Maximum Ceiling
Temperature
Sprinkler Identification
Number
(SIN)
°F °C °F °C
Ordinary
Intermediate
165
212
74
100
Black
White
Uncolored
White
100
150
38
66 RA0912
Material Data:
Frame Deflector Load Screw Lever Strut Link
Assembly Cap Washer Kick Spring
Brass Bronze Stainless
Steel
Stainless
Steel
Stainless
Steel
Beryllium Nickel,
Soldered Brass Beryllium
Nickel
Stainless
Steel
2.
Fig. 1
Maintenance
The Model N25 ESFR Sprinkler should be inspected and
the sprinkler system maintained in accordance with NFPA
25. Do not clean sprinkler with soap and water, ammonia
or any other cleaning fluid. Remove any sprinkler that has
been painted (other than factory applied) or damaged in
any way. A stock of spare sprinklers should be maintained
to allow quick replacement of damaged or operated
sprinklers. Prior to installation, sprinklers should be
maintained in the original cartons and packaging until
used, to minimize the potential for damage to sprinklers
that would cause improper operation or non-operation.
Once operated, automatic sprinklers cannot be
reassembled and reused. New sprinklers of the same size,
type and temperature rating must be installed. A cabinet
of replacement sprinklers should be provided for this
purpose.
Model N25 ESFR Sprinkler Specification
Sprinklers shall be Early Suppression Fast Response
(ESFR) pendent suppression mode sprinklers specifically
tested and [FM Approved] for commodity storage
applications. Sprinkler frame and deflector to be of
bronze construction. Fusible link assembly shall utilize the
strut and lever principle of operation with approved fast
response black-painted or white-painted beryllium-nickel
thermal element. Water seal shall consist of a PTFE-
coated Bellville spring washer and brass cap assembly
containing no plastic parts. ESFR sprinklers shall have a
nominal K-factor of 25.2 with [1” NPT threaded] [ISO 7 1R1
threaded] [Victaulic® IGS™ grooved] end connections.
Sprinkler temperature rating shall be [Ordinary 165°F
(74°C)] [Intermediate 212°F (100°C)].
Installation
For threaded sprinklers, use only the Model W5
sprinkler wrench. Any other type of wrench may damage
the sprinkler. Sprinklers should be tightened between 22
- 30 ft-lbs (30- 41 Nm) torque. Sprinklers not tightened to
recommended torque or tightened past recommended
torque may cause leakage or impairment of the sprinkler.
Damaged sprinklers must be replaced immediately.
For grooved sprinklers, push the IGS™ Style V9
Sprinkler Coupling onto the grooved outlet until contact
with the center leg of the gasket occurs. Align the
sprinkler frame arms and the pads of the coupling with
the sprinkler piping and tighten the coupling until the
pads of the coupling meet. For additional information,
please reference Victaulic®technical bulletin I-V9.
Fig. 2 - Model W5 Wrench (for threaded sprinklers only)
Caution: When handling sprinklers, hold sprinklers only
by the frame arms and do not apply any force on the link
assembly.