Model TN-25
25.2 (K360) K-factor
Horizontal Spray Nozzle, Open
Page 1 of 6
DECEMBER 2020
TFP850
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
NOTICE
The
TYCO Model TN-25 Horizontal
Spray Nozzle
described herein must
be installed and maintained in compli-
ance with this document and with the
applicable standards recognized by any
authorities having jurisdiction. Failure
to do so may impair the performance
of these devices.
The design of individual fixed water
spray systems for fire protection
can vary considerably, depending
on the characteristics and nature of
the hazard, the basic purpose of the
spraying system, the configuration of
the hazard, and wind/draft/ventilation
conditions. Because of these varia-
tions, the design of fixed water spray
systems must only be performed by
experienced designers who thoroughly
understand the limitations as well as
capabilities of such systems.
The Tunnel Operator is responsible for
maintaining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
General
Description
The TYCO Model TN-25 Horizontal
Spray Nozzle having a 25.2 (K360)
K-factor is a specialized open nozzle
for use in tunnel fire protection deluge
systems, providing an improved alter-
native to traditional designs. With its
ability to provide extended coverage,
the Model TN-25 Nozzle allows for a
single pipe to run the length of a tunnel,
compared to traditional designs that
use multiple pipes in order to provide
sufficient coverage. The Model TN-25
Nozzle is an open nozzle designed to
be integrated into a deluge fire protec-
tion system.
The Model TN-25 Nozzle provides
protection of coverage areas up to
16 ft 4 in. x 24 ft 7 in. (5,0 m x 7,5 m)
as compared to standard coverage
sprinklers often used in tunnel fire
protection system designs having a
maximum coverage area of 10 ft x 10 ft
(3,0 m x 3,0 m).
Technical
Data
Approvals
UL and C-UL Listed
Minimum Working Pressure
7 psi (0,5 bar)
Maximum Working Pressure
30 psi (2,1 bar)
Pipe Thread Connections
1 in. NPT or ISO 7-R 1
Discharge Coefficient
K=25.2 gpm/psi
½
(362,9 Lpm/bar
½
)
Finish
Natural Brass
Physical Characteristics
Natural Brass
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Deflector Screw . . . . . . . . . . . . . Stainless Steel
Deflector . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Deflector Nut . . . . . . . . . . . . . . . . . . . . . . .Bronze
