The flow “Q” in GPM (LPM) is deter-
mined by the following formula:
where the nominal discharge coeffi-
cient “K” equals 2.8 (40,3) and “p”
equals the residual flowing pressure in
psi (bar).
The F916 utilizes a dezincification re-
sistant bronze alloy frame, and the de-
flector is brass. The button is phosphor
bronze
with a Teflon
gasket. The
strut is phosphor bronze. The hook is
phosphor bronze for ordinary tempera-
ture rated sprinklers, otherwise it is
Monel. The ejection spring is stainless
steel. The fusible element utilizes a
solder pellet within a sub-assembly
constructed of copper, stainless steel,
and Monel components. The bushing
is brass.
NOTES
Inquiries concerning the appropriate-
ness of wax or lead coated sprinklers
for a given corrosive environment
should be submitted to the attention
of the Technical Services Department.
Wax or lead coated sprinklers are not
suitable for use in open sprinkler ap-
plications.
INSTALLATION
NOTES
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
maximum of 21 ft. lbs. (28,5 Nm) of
torque may be used to install sprin-
klers with 1/2 NPT connections.
Higher levels of torque may distort the
sprinkler inlet with consequent leak-
age or impairment of the sprinkler.
Do not attempt to make-up for insuf-
ficient adjustment in the escutcheon
plate by under- or over-tightening the
sprinkler. Readjust the position of the
sprinkler fitting to suit.
The
Model F916 Pendent and Up-
right Sprinklers
must be installed in
accordance with the following instruc-
tions.
Step 1.
Pendent sprinklers are to be
installed on 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
9 Sprinkler Wrench (Ref. Figure C),
except that an 8 or 10 inch adjustable
Crescent wrench is to be used for wax
coated sprinklers. With reference to
Figure A, the W-Type 9 Sprinkler
Wrench is to be applied to the sprinkler
wrenching area, and the adjustable
Crescent wrench is to be applied to the
wrenching flanges.
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 wrenching flanges or
frame arms and, consequently, expo-
sure of bare metal to the corrosive
environment. The jaws of the wrench
should be opened sufficiently wide to
pass over the wrenching flanges with-
out damaging the wax coating. Before
wrench tightening the sprinkler, the
jaws of the wrench are to be adjusted
to just contact the sprinkler wrenching
flanges. After wrench tightening the
sprinkler, loosen the wrench jaws be-
fore removing the wrench.
After installation, the sprinkler wrench-
ing flanges and frame arms must be
inspected and the wax coating re-
touched (repaired) whenever the coat-
ing has been damaged and bare metal
is exposed. The wax coating on the
wrenching flanges can be retouched
by gently applying a heated 1/8 inch
diameter steel rod to the areas of wax
that have been damaged, to smooth it
back over areas where bare metal is
exposed.
NOTES
Only retouching of the wax coating
applied to the wrenching flanges and
frame arms is permitted, and the re-
touching is to be performed only at the
time of the initial sprinkler installa-
tion.
The steel rod should be heated only to
the point at which it can begin to melt
the wax, and appropriate precautions
need to be taken, when handling the
heated rod, in order to prevent the
installer from being burned.
If attempts to retouch the wax coating
with complete coverage are unsuccess-
ful, additional wax can be ordered in
the form of a wax stick (the end of
which is color coded). Only the correct
color coded wax is to be used, and
retouching of wrenching flanges and
frame arms is only permitted at the
time of initial sprinkler installation.
With the steel rod heated as pre-
viously described, touch the rod to the
area requiring additional wax with
the rod angled downward, and then
touch the wax stick to the rod approxi-
mately one-half inch away from the
area requiring retouching. The wax
will melt and run down onto the
sprinkler.
The
Model F916 Recessed Pendent
and Sprinklers
must be installed in
accordance with the following instruc-
tions.
Step A.
Verify that the face of the
sprinkler fitting is within the proper
range of distance which can be accom-
modated by the Model F700 Recessed
Escutcheon.
For best overall appearance, use Di-
mension “A” indicated under the “Fully
Recessed Dimensions” heading of
Figure B. Otherwise, use Dimension
“A” under the “High Adjustment Di-
mensions” heading. In either case, the
Q
K p
=
DuPont Registered Trademark
TYPE
TEMPERATURE
RATING
FRAME
COLOR
CODE
NATURAL
BRASS
CHROME
PLATED
LEAD
COATED
135°F/57°C
360°F/182°C
PENDENT
(SIN G3122)
and
UPRIGHT
(SIN G3121)
SPRINKLER FINISH
Unpainted
Unpainted
White
Blue
Red
165°F/74°C
212°F/100°C
280°F/138°C
NOTES:
1. Listed by Underwriters Laboratories, Inc.
2. Listed by Underwriters’ Laboratories of Canada.
N/A: Not Available
TABLE A, LABORATORY LISTINGS AND APPROVALS
CORROPROOF
WAX
COATED
CORROPROOF
WAX OVER
LEAD COATED
N/A
1, 2
N/A
1
1
RECESSED
PENDENT
(SIN G3122)
w/ F700
ESCUTCHEON
165°F/74°C
135°F/57°C
212°F/100°C
Unpainted
Unpainted
White
N/A
OBSOLETE
