falls away to expose the Sprinkler
Assembly. At this point the Deflector
supported by the Arms drops down to its
operational position.
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 Model BV4 & BV4-FR Concealed
Pendent Sprinklers described herein must
be installed & 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 C3551 - Model BV4
SIN C3531 - Model BV4-FR
Approvals
UL and C-UL Listed. NYC and
FM Approved.
(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
1/2 inch NPT
Discharge Coefficient
K = 5.6 GPM/psi
1/2
(80,6 LPM/bar
1/2
)
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 BV4 & BV4-FR
5.6 K-factor
Standard & Quick Response
Standard Coverage
Concealed Pendent Glass Bulb Automatic Sprinkler
No. 1-8.0
General
Description
The Central Model BV4, 5.6 K-factor,
standard response & BV4-FR, 5.6
K-factor, quick response - standard
coverage, decorative glass bulb type
spray sprinklers designed for use in light or
ordinary hazard, commercial occupancies
such as banks, hotels, shopping malls,
etc.
Each unit includes a Cover Plate Assem-
bly which conceals the sprinkler operating
components above the ceiling. The
separable two-piece design of the Cover
Plate and Support Cup Assemblies allows
installation of the sprinklers and pressure
testing of the fire protection system prior to
installation of a suspended ceiling or
application of the finish coating to a fixed
ceiling. They also permit removal of
suspended ceiling panels for access to
building service equipment without having
to first shut down the fire protection system
and remove sprinklers.
Also, the separable two-piece design of
the sprinkler provides for 1/2 inch
(12,7 mm) of vertical adjustment, to
reduce the accuracy to which the length of
fixed pipe drops to the sprinkler must be
cut.
The BV4 & BV4-FR Concealed Pendent
Sprinklers are shipped with a Disposable
Protection Cap. The Protective Cap is
temporarily removed to install the BV4 &
BV4-FR, and then replaced to protect the
BV4 & BV4-FR while the ceiling is being
installed and finished. The tip of the
Protection Cap can be used to mark the
center of the ceiling hole into plaster
board, ceiling tiles, etc. by pushing the
ceiling product against the Protection Cap.
When the ceiling installation is complete,
the Protection Cap is removed and the
Cover Plate Assembly installed.
Operation: When exposed to heat from a
fire, the Cover Plate, which is soldered to
the Retainer Assembly at three points,
Technical
Data
CENTRAL
BV4 & BV4-FR
2-01
Standard Spray
Concealed
Pendent
Sprinklers
Temperature Ratings
155
°
F/68
°
C Sprinkler - 135
°
F/57
°
C Plate
200
°
F/93
°
C Sprinkler - 165
°
F/74
°
C Plate
Finishes
Sprinkler: Natural Brass
Cover Plate: Chrome or Brass Plated;
*Flat White, Bright White, or Custom
Painted
* Standard Finish supplied when White is
specified
Physical Characteristics
The Model BV4 & BV4-FR Concealed
Pendent Sprinklers utilize a dezincification
resistant (DZR) bronze frame and a 5 mm
(standard response) or 3 mm bulb (quick
response). The two-piece button assem-
bly 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 arms and deflector
are bronze, and the support cup is steel.
The cover plate and retainer assembly are
brass.
OBSOLETE
