representative of all possible corrosive
atmospheres. Consequently, it is recom-
mended that the end user be consulted
with respect to the suitability of these
corrosion resistant coatings for any given
corrosive environment. The effects of
ambient temperature, concentration of
chemicals, and gas/chemical velocity,
should be considered, as a minimum,
along with the corrosive nature of the
chemical to which the sprinklers will be
exposed.
Operation: A fusible alloy is sealed into a
bronze actuating rod (center strut) by a
stainless steel ball. When the alloy melts
at its rated temperature, the ball is forced
upward into the center strut, releasing the
two ejectors and operating the sprinkler.
WARNING
The ELO-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 maintaining
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 C5111 - Upright
SIN C5211 - Pendent
SIN C5811 - Upright (1/2" NPT)
Approvals
UL & ULC Listed. FM & NYC 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)
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 ELO-231
TM
11.2 K-factor
Standard Response
Standard Coverage
Upright & Pendent Fusible Solder Type Automatic Sprinkler
No. 3-7.0
General
Description
The Central Model ELO-231,
11.2 K-factor, Standard Response,
Standard Coverage, Pendent and Upright
Sprinklers are automatic sprinklers of the
fusible solder type. They are "standard
response - spray sprinklers" which
produce a hemispherical water distribution
pattern below the deflector.
The Model ELO-231 Sprinklers are
intended for use in fire sprinkler systems
designed in accordance with the standard
installation rules recognized by the
applicable Listing or Approval agency
(e.g., UL Listing is based on the require-
ments 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 11.2 K-factor Model ELO-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
ELO-231 Sprinklers; making their use
highly advantageous in high density
applications, such as the protection of
high-piled storage.
The use of the 11.2 K-factor Model
ELO-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.
Wax or lead coatings can be used to
extend the life of the copper alloy
components used in Model ELO-231
Sprinklers beyond that which would
otherwise be obtained when exposed to
corrosive atmospheres. Although wax &
lead coated sprinklers have passed the
standard corrosion tests of the applicable
approval agencies, the testing is not
Technical
Data
CENTRAL
ELO-231
2-01
Standard Spray
Upright &
Pendent
Sprinklers
Pipe Thread Connection
1/2 inch NPT (Upright Only)
3/4 inch NPT
Discharge Coefficient
K = 11.2 GPM/psi
1/2
(161,39 LPM/bar
1/2
)
Temperature Ratings
165
°
F/74
°
C, 212
°
F/100
°
C, 286
°
F/141
°
C
Finishes
Sprinkler: Chrome Plated, or Natural
Brass
Corrosion Resistant Coatings
Sprinkler: Wax, Lead & Wax-over-Lead
Head Guard & Water Shield:
G-2 (Guard) - Up & Pend.
WSG-2 (Guard & Shield) - Up (UL only)
WS-2 (Shield) - Pendent (UL only)
(See Data Sheet 3-11.0 for details)
Physical Characteristics
The Model ELO-231 Upright & Pendent
Sprinklers utilize a dezincification resistant
(DZR) bronze frame and a brass deflector.
The waterway is sealed with a copper cap
and seal disk, and the fusible assembly is
constructed of bronze and stainless steel
components.
OBSOLETE
