Operation: The glass bulb contains a
fluid which expands when exposed to
heat. When the rated temperature is
reached, the fluid expands sufficiently to
shatter the glass bulb, which then allows
the sprinkler to activate & flow water.
WARNING
The K17-231 Upright and Pendent
Sprinklers described herein must be
installed 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 maintain-
ing their fire protection system and
devices in proper operating condition.
The installing contractor or sprinkler
manufacturer should be contacted
relative to any questions.
Sprinkler Identification Number
SIN C7151 - Upright
SIN C7251 - Pendent
Approvals
UL & C-UL Listed. FM Approved
(Refer to Tables 1 & 2. 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
3/4 inch NPT
Discharge Coefficient
K = 16.8 GPM/psi
1/2
(241,9 LPM/bar
1/2
)
Temperature Ratings
155
o
F/68
o
C, 200
o
F/93
o
C, 286
°
F/141
°
C
Finishes
Sprinkler: Natural Brass
Tyco Fire Products --- www.centralsprinkler.com
451 North Cannon Avenue, Lansdale, Pennsylvania 19446 --- USA
Customer Service/Sales: Tel: (215) 362-0700 / Fax: (215) 362-5385
Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500
Model K17-231
16.8 K-factor
Standard Response
Standard Coverage
Upright & Pendent Glass Bulb Automatic Sprinkler
No. 3-4.0
General
Description
The Central Model K17-231, 16.8
K-factor, Standard Response, Standard
Coverage, Pendent & Upright Sprinklers
are automatic sprinklers of the frangible
bulb type. They are "standard response
- spray sprinklers" which produce a
hemispherical water distribution pattern
below the deflector.
The Model K17-231 Sprinklers are
intended for use in fire sprinkler
systems designed in accordance with
the standard installation rules recog-
nized by the applicable Listing or
Approval agency (e.g., UL Listing is
based on the requirements of the
National Fire Protection Association).
Also, when acceptable to the Authority
Having Jurisdiction, they may be used
with a "Reduced Design Area" as
indicated in Table 2.
The 16.8 K-factor Model K17-231
Sprinklers were subjected to full scale,
high-piled storage, fire tests to qualify
their use in lieu of 5.6 or 8.0 K-factor
standard spray sprinklers for the
protection of high-piled storage.
Higher flow rates can be achieved at
much lower presures with the Model
K17-231 Sprinklers; making their use
highly advantageous in high density
applications, such as the protection of
high-piled storage.
The use of the 16.8 K-factor Model
K17-231
Sprinkler also has the advan-
tage of having a specific application
listing, which in some cases can
subsequently reduce the design area
and the overall water demand of a
sprinkler system. Refer to Table 2 for
details.
Technical
Data
CENTRAL
K17-231
TM
5-01
Standard Spray
Upright &
Pendent
Sprinklers
Physical Characteristics
The Model K17-231 Upright & Pendent
Sprinklers utilize a dezincification
resistant (DZR) bronze frame and a 5
mm bulb. The two-piece button
assembly is brass and copper. The
sprinkler frame orifice is sealed with a
gasketed spring plate (Belleville Seal)
consisting of a beryllium nickel disc
spring that is sealed on both its inside
and outside edges with a Teflon
TM
gasket. The compression screw is
bronze, & the deflector is brass.
OBSOLETE
