obtained when exposed to corrosive
atmospheres. Although polyester coated
sprinklers have passed the standard
corrosion tests of the applicable approval
agencies, the testing is not representative
of all possible corrosive atmospheres.
Consequently, it is recommended that the
end user be consulted with respect to the
suitability of these corrosion resistant
coatings for any given corrosive environ-
ment. The effects of ambient temperature,
concentration of chemicals & 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: 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 ELO-231 BVQR 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 C5131 - Upright
SIN C5231 - Pendent
Approvals
UL & C-UL 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 BVQR
11.2 K-factor
Quick Response
Standard Coverage
Upright, Pendent & Recessed Pendent Glass Bulb Automatic Sprinkler
No. 3-10.0
General
Description
The Central Model ELO-231
BVQR,
11.2 K-factor, Quick Response, Standard
Coverage, Upright, Pendent & Recessed
Pendnet Sprinklers are automatic
sprinklers of the frangible bulb type. They
are "quick response - spray sprinklers"
which produce a hemispherical water
distribution pattern below the deflector.
These 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 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 recessed version of the Central Model
ELO-231 BVQR Sprinklers, intended for
use in areas with a finished ceiling, uses a
two-piece Model ELO Recessed Escutch-
eon. This recessed escutcheon provides
up to 3/4 inch (19,1 mm) of total adjust-
ment from the flush pendent position.
These 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 BVQR 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
BVQR Sprinkler also has the
advantage of having a specific application
listing, which in some cases can subse-
quently reduce the design area and the
overall water demand of a sprinkler
system. Refer to Table 2 for details.
Polyester coatings can be used to extend
the life of the copper alloy components
used in Model ELO-231 BVQR Sprinklers
beyond that which would otherwise be
Technical
Data
CENTRAL
ELO-231
BVQR
2-01
Standard Spray
Upright, Pendent
& Rec. Pendent
Sprinklers
Pipe Thread Connection
3/4 inch NPT
Discharge Coefficient
K = 11.2 GPM/psi
1/2
(161,39 LPM/bar
1/2
)
Temperature Ratings
155
o
F/68
o
C, 200
o
F/93
o
C, 286
°
F/141
°
C
Finishes
Sprinkler: White Polyester, Chrome
Plated, or Natural Brass
Corrosion Resistant Coatings
White Polyester (UL only)
Head Guard & Water Shield:
G-2 (Guard) - Up & Pend.
WSG-2 (Guard & Shield) - Up
WS-2 (Shield) - Pendent
(See Data Sheet 3-11.0 for details)
Physical Characteristics
The Model ELO-231 BVQR Upright &
Pendent Sprinklers utilize a dezincification
resistant (DZR) bronze frame and a 3 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
