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 and water to flow.
Design
Criteria
The Series TY-B Pendent and Upright
Sprinklers are intended for fire protec-
tion systems designed in accordance
with the standard installation rules rec-
ognized by the applicable Listing or
Approval agency (e.g., UL Listing is
based on the requirements of NFPA
13, and FM Approval is based on the
requirements of FM’s Loss Prevention
Data Sheets). Only the Style 10 or 40
Recessed Escutcheon, as applicable,
is to be used for recessed pendent
installations.
Installation
The Series TY-B Sprinklers must be
installed in accordance with the follow-
ing instructions:
NOTES
Do not install any bulb type sprinkler if
the bulb is cracked or there is a loss of
liquid from the bulb. With the sprinkler
held horizontally, a small air bubble
should be present. The diameter of the
air bubble is approximately 1/16 inch
(1,6 mm) for the 135°F/57°C to 3/32
inch (2,4 mm) for the 360°F/182°C
temperature ratings.
A leak tight 1/2 inch NPT sprinkler joint
should be obtained with a torque of 7
to 14 ft.lbs. (9,5 to 19,0 Nm). A maxi-
mum of 21 ft. lbs. (28,5 Nm) of torque
may be used to install sprinklers with
1/2 NPT connections. A leak tight 3/4
inch NPT sprinkler joint should be ob-
tained with a torque of 10 to 20 ft.lbs.
(13,4 to 26,8 Nm). A maximum of 30
ft.lbs. (40,7 Nm) of torque is to be used
to install sprinklers with 3/4 NPT con-
nections. Higher levels of torque may
distort the sprinkler inlet with conse-
quent leakage or impairment of the
sprinkler.
Do not attempt to make-up for insuffi-
cient adjustment in the escutcheon
plate by under- or over-tightening the
sprinkler. Readjust the position of the
sprinkler fitting to suit.
The
Series TY-B Pendent and Up-
right Sprinklers
must be installed in
accordance with the following instruc-
tions.
Step 1.
Pendent sprinklers are to be
installed in the pendent position, and
upright sprinklers are to be installed in
the upright position.
Step 2.
With pipe thread sealant ap-
plied to the pipe threads, hand tighten
the sprinkler into the sprinkler fitting.
Step 3.
Tighten the sprinkler into the
sprinkler fitting using only the W-Type
6 Sprinkler Wrench (Ref. Figure 6),
except that an 8 or 10 inch adjustable
Crescent wrench is to be used for wax
coated sprinklers. With reference to
Figures 1, 2, and 3, the W-Type 7
Sprinkler Wrench or the adjustable
Crescent wrench, as applicable is to
be applied to the wrench flats.
When installing wax coated sprinklers
with the adjustable Crescent wrench,
additional care needs to be exercised
to prevent damage to the wax coating
on the sprinkler wrench flats or frame
arms and, consequently, exposure of
bare metal to the corrosive environ-
ment. The jaws of the wrench should
be opened sufficiently wide to pass
over the wrench flats without damag-
ing the wax coating. Before wrench
tightening the sprinkler, the jaws of the
wrench are to be adjusted to just con-
tact the sprinkler wrench flats. After
wrench tightening the sprinkler, loosen
the wrench jaws before removing the
wrench.
After installation, the sprinkler wrench
flats and frame arms must be in-
TFP151
Page 3 of 8
PLATE SEATING
ESCUTCHEON
(57,2 mm)
2-1/4"
WRENCH
(39,7 mm)
1-9/16"
FLATS
7/16" (11,1 mm)
NOMINAL
MAKE-IN
SURFACE
NPT
1/2"
2-3/16"
(55,6 mm)
SSU
DEFLECTOR
DEFLECTOR
SSP
SECTION
PENDENT
UPRIGHT
CROSS
3
1
2
5
4
6
7
**
*
*
*
FIGURE 3
STANDARD RESPONSE SERIES TY-B UPRIGHT (TY4851) AND PENDENT (TY4951) SPRINKLERS
8.0 K-FACTOR, 1/2 INCH NPT
1 - Frame
2 - Button
3 - Sealing
Assembly
4 - Bulb
5 - Compression
Screw
6 - Deflector
*
Temperature rating is indicated on deflector or adjacent to
orifice seat on frame.
**
Pipe thread connections per ISO 7/1 can be provided on
special request.
OBSOLETE
