Viking HQR-2 Instruction manual

1. PRODUCT NAME
Viking Model HQR-2 Institutional Style
Quick Response Flush Horizontal Side
-
wall Sprinkler
•Sprinkler Base Part No. 10579
•Sprinkler Identification No. VK412
•Available since 1999.
Escutcheon Package
•Base Part No. 10627
•Available since 1999.
NOTE:The Sprinkler Identification Number (SIN) is
stamped on the sprinkler body.
2. MANUFACTURER
The Viking Corporation
210 N. Industrial Park Road
Hastings, Michigan 49058 U.S.A.
Telephone: [phone]
[phone]
Fax: [phone]
e-mail: [email protected]
3. PRODUCT DESCRIPTION
The Viking Institutional Style Quick Re-
sponse Flush Horizontal Sidewall Sprin
-
kler is a small, flush, solder link and lever
sprinkler made with tamper-resistant
construction. This institutional style
sprinkler has been specificallydesigned
for use with concealed piping in institu-
tional mental health occupancies, cor
-
rectional facilities, or anywhere a likeli-
hood of tampering with fire sprinklers by
the occupants may exist.
The Viking Institutional Style Quick Re-
sponse Horizontal Sidewall Sprinkler
assembly consists of the sprinkler body,
lockring, and a 3-1/4" (82,6 mm) diame-
ter thread-on escutcheon plate. The
sprinkler and escutcheon plate have a
chrome finish.
Tests simulating conditions of misuse
demonstrate the fusible element as
-
sembly consistently breaks away when
connected to a 40 lb. weight dropped six
inches†.
† For a copy of the break-a-way test
described, contact The Viking Corpora
-
tion. The Viking Corporation disclaims
any responsibility for damages or injury (in
-
cluding death) caused by the operation or
inoperation of sprinklers arising out of the
misuse of or tampering with Viking®brand
sprinklers including, without limitation, any
personal injury or death arising out of or
caused by the manipulation of, dismantling
of, or attempted use of the sprinkler or any
component as an instrument unrelated to
its intended use.
4. TECHNICAL DATA
LISTINGS: cULus Listed and Ac-
cepted for use by the City of New
York Department of Buildings as a
Quick Response Flush Horizontal
Sidewall Sprinkler for Light Haz-
ard Occupancies below smooth,
flat, horizontal ceilings only. (See
approval chart on page 126 l.)
Rated to 175 psi (1 207 kPa) water work-
ing pressure.
Spring: U.S. Patent No. 4,570,720
Deflector: U.S. Patent No. 6,520,265
Thread Size: Nominal ½" (15 mm) NPT
Nominal K-Factor: 5.6 U.S. (8,1 metric)
Metric K-Factor shown is for use when pressure is
measured in kPa. When pressure is measured in
BAR, multiply the metric K-Factor shown by 10.0.
Overall Length: 2-3/16" (56 mm)
AVAILABLE FINISH
Polished Chrome
SPRINKLERASSEMBLYMATERIALS
Sprinkler Body: Brass Casting
UNS-C84400
BodyCap: Stainless Steel UNS-S30400
or UNS-S30500
Deflector: Copper UNS-C19500
Deflector Pins: Stainless Steel
UNS-S30300
Button: Brass UNS-C31600
Compression Screw: Brass UNS-C36000
Fusible Link Assembly: Beryllium Nickel
and Eutectic Solder
Fusible Link Levers: Stainless Steel
UNS-S31600
Lever Bar: Copper Alloy UNS-C72500
Lever Bar Ejector: Stainless Steel
UNS-S30400
Belleville Spring Sealing Assembly:
Nickel Alloy, coated on both sides
with Teflon Tape
ESCUTCHEONPACKAGEMATERIALS
Escutcheon Plate: Brass UNS-C26000
Lockring: Stainless Steel UNS-S41000
ORDERING INSTRUCTIONS
To order the Viking Institutional Style
Quick Response Flush Horizontal Side-
wall Sprinkler, refer to the following:
Sprinkler Base Part No. 10579 (specify
sprinkler temperature rating).
Escutcheon Package Part No. 10627
(includes lockring and escutcheon
plate).
Institutional Escutcheon Installation
Wrench Part No. 10551W/B:
Steel UNS-G10100
Available since 1999.
Flush/Concealed Sprinkler Wrenches*
A. Heavy Duty Part No. 08336W/B
Available since 1983, or
B. Light Duty Part No. 10366W/B**
Available since 1998.
*Requires a ½" ratchet (not available
from Viking).
**Ideal for sprinkler cabinets.
ACCESSORIES
A. Sprinkler Cabinet: Part No. 01731A
Capacity: six (6) sprinklers
Available since 1971.
B. Retaining Flange Assembly: Part No.
10599, includes:
•Retaining Flange Casting: AISI C1045
Low Carbon Steel
Thickness: 13/32” (10,3 mm)
Outside Diameter: 2-5/16” (59 mm)
Available since 1999.
•Socket Set Screw††: Steel Alloy
††Requires a 1/8" hex wrench for in-
stallation and removal (not available
from Viking).
C.SpannerWrench Part No. 10729***
(for removal of institutional es-
cutcheon plate, 2-1/2" C-C
Available since 1999.
***For removal of Viking Institutional
Style Quick Response Flush Horizontal
Sidewall Sprinklers, special tools are
needed (not all the required tools are
available from Viking). Refer to section
9. MAINTENANCE, Paragraph D, on
page 126 o.
5. AVAILABILITY & SERVICE
Viking products are available through a
network of domestic, Canadian, and
international distributors. See the Viking
Corp. Web site for your closest distribu-
tor or contact The Viking Corporation.
Sprinkler 126 k
Note: Units of measure in parentheses may be approximations.
Figure 1
Retaining Flange
Institutional Style Quick Response
Flush Horizontal Sidewall Sprinkler
TECHNICAL DATA INSTITUTIONAL STYLE
QUICK RESPONSE FLUSH
SIDEWALL SPRINKLER
Form No. F_101098
Replaces page 126 k-o, dated April 1, 2002
(updated the sprinkler materials list).
Institutional Style Sprinkler Body,
Lockring, and Escutcheon Plate
(RefertoInstallation TiponPage126m.)
August 29, 2003
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Viking technical data may be found on
The Viking Corporation’s Web site at
http://www.vikingcorp.com.
The Web site may include a more recent
edition of this technical data page.
6. GUARANTEES & DISCLAIMER
For details of warranty, refer to Viking’s
current list price schedule or contact
The Viking Corporation directly.
THE VIKING CORPORATION DIS
-
CLAIMS ANY RESPONSIBILITY FOR
DAMAGES OR INJURY (INCLUDING
DEATH) CAUSED BY THE OPERA-
TION OR INOPERATION OF SPRIN-
KLERS ARISING OUT OF THE MIS-
USE OF OR TAMPERING WITH
VIKING®BRAND SPRINKLERS IN-
CLUDING, WITHOUT LIMITATION,
ANY PERSONAL INJURY OR DEATH
ARISING OUT OF OR CAUSED BY
THE MANIPULATION OF, DISMAN-
TLING OF, OR ATTEMPTED USE OF
THE SPRINKLER OR ANY COMPO-
NENT AS AN INSTRUMENT UNRE
-
LATED TO ITS INTENDED USE.
7. OPERATION AND DESIGN
REQUIREMENTS
The Viking Institutional Style Quick Re-
sponse Flush Horizontal Sidewall Sprin
-
kler is UL and C-UL Listed and Accepted
for use by the City of New York Depart-
ment of Buildings as a Quick Response
Flush Horizontal Sidewall Sprinkler for
standard areas of coverage with mini-
mum flow and pressure requirements as
specified in current NFPA Standards.
The sprinkler must be installed in the
horizontal sidewall position in fixed fire
protection systems (wet, dry, deluge, or
preaction systems).
The special escutcheon plate on the
Viking Institutional Style Quick Re-
sponse Flush Horizontal Sidewall Sprin-
kler assembly is the only escutcheon
ring that may be used with these institu-
tional sprinklers, and all of these sprin-
klers must be installed with this escutch
-
eon plate. Removal of the thread- on es-
cutcheon plate is prevented by the
lockring.
The sprinkler piping behind the wall
leading to the sprinkler must be secured
to prevent any movement of the sprin
-
kler. One method of anchoring the pipe
behind the wall is to use the retaining
flange and screw assembly that are
available from Viking. The flange slides
over the sprinkler nipple prior to thread-
ing the nipple into the tee (see Figure
3A).
The sprinkler is recessed into the
mounting surface, flush to the wall, with
only a portion of the fusible link assem-
bly exposed beyond the wall.
The concealed deflector is held inside
the sprinkler body until the eutectic
Sprinkler 126 l
Figure 2
TECHNICAL DATA INSTITUTIONAL STYLE
QUICK RESPONSE FLUSH
SIDEWALL SPRINKLER
WARNING: There is no adjustability.
To avoid misuse of the sprinkler, DO NOT install beyond flush.
NOTE: Upon sprinkler activation,
the deflector extends approximately
1/4" (6,4 mm) beyond the sprinkler
Sprinkler Temperature
Classification Nominal Sprinkler Temperature Rating (Fusing Point) Maximum Ambient Ceiling Temp.1,2
Ordinary 165 °F (74 °C) 100 °F (38 °C)
Intermediate 220 °F (104 °C) 150 °F (66 °C)
Approval Chart
Institutional Style Quick Response
Flush Horizontal Sidewall Sprinkler
Thread Size Sprinkler
Base
Part No.3SIN Nominal K-factor Overall Length Listings5,6,7
NPT BSP U.S. metric4Inches mm cULus10 FM NYC9
½" 15 mm 10579 VK412 5.6 8,1 2-9/32 57,9 A1 –A1
Temperature Ratings
A - 165 °F (74 °C)
B - 220 °F (104 °C)8
Available Finish
1 - Polished Chrome
Footnotes
1 Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location, and other re-
quirements of the Authority Having Jurisdiction. Refer to specific installation standards.
2 The temperature rating is stamped on the sprinkler.
3Base part number is shown. For complete part number, refer to Viking's current price list.
4 Metric K-Factor shown is for use when pressure is measuredinkPa.Whenpressure is measured in BAR,
multiply the metric K-Factor shown by 10.0
5This chart shows the listings and approvals available at the time of printing. Other approvals are in pro-
cess. Check with the manufacturer for any additional approvals.
6The Viking Institutional Style Quick Response Flush Horizontal Sidewall Sprinkler is UL/C-UL Listed and
Accepted for use by the City of New York Department of Buildings as a Quick Response Flush Horizontal Side-
wall Sprinkler for Light Hazard Occupancies only, below smooth, flat, horizontal ceilings.
7 Horizontal sidewall sprinklers must be located with deflectors 4" to 12" (102 mm to 304 mm) below
smooth, flat, horizontal ceilings, and flush with the wall in which they are installed.
8Available temperature ratings are 165 °F (74 °C) and 220 °F (104 °C). However, only the 165 °F (74 °C)
temperature rated sprinkler is UL/C-UL Listed and Accepted for use by NYC at the time of this writing.
9 Accepted for use, City of New York Department of Buildings, MEA 89-92-E, Vol 16.
10Listed by Underwriters Laboratories Inc. for use in the U.S. and Canada.
Temperature KEY
Finish
A1
August 29, 2003
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metal solder link is fused. When the
sprinkler fuses, the deflector extends to
discharge and distribute water.
8. INSTALLATION
(Refer to Figures 1, 2, and 3.)
WARNING: Viking sprinklers are manu-
factured and tested to meet the rigid re-
quirements of the approving agency.
The sprinklers are designed to be in-
stalled in accordance with recognized
installation standards. Deviation from
the standards or any alteration to the
sprinkler after it leaves the factory in-
cluding, but not limited to: painting, plat-
ing, coating,ormodification, may render
the sprinkler inoperative and will auto
-
matically nullify the approval and any
guaranteemadeby TheVikingCorpora-
tion.
A. Sprinklers are to be installedin accor-
dance with the latest published stan-
dards of the National Fire Protection
Association, Factory Mutual, Loss
Prevention Council, Assemblee
Pleniere, Verband der Sachver-
sicherer or other similar organiza
-
tions, and also with the provisions of
governmental codes, ordinances,
and standards whenever applicable.
Flushsprinklers are decorativesprin
-
klers and may be considered special
purpose. As such, some Authorities
may limit the use depending on the
occupancy classification. Refer to
the Authority Having Jurisdiction
prior to installation.
B. Sprinklers must be handled with care.
They must be stored in a cool, dry
place in their original shipping con-
tainer. Never install sprinklers that
have been dropped, damaged in any
way, or have been exposed to tem
-
peratures in excess of maximum am-
bient temperature allowed. Such
sprinklers should be destroyed im-
mediately.
C. Viking Institutional Style Quick Re
-
sponse Flush Horizontal Sidewall
Sprinklers are not intended for use in
corrosive environments. Use only
sprinklers listed for corrosive envi-
ronments when subject to corrosive
atmospheres.
D. Use care when locating sprinklers
near fixtures that can generate heat.
Do not install sprinklers where they
would be exposed to temperatures
that exceed the maximum recom-
mended ambient temperaturefor the
temperature rating used.
E. Adequate heat must be provided
when the Viking Institutional Style
Quick Response Flush Horizontal
Sidewall Sprinkler is installed on
wet-pipe systems.
F. The sprinklers must be installed after
the piping is in place to prevent me-
Sprinkler 126 m
Figure 3: Sequence of Installation
E
D
C
B
INSTALLATION TIP:
Do not install the lockring onto the sprinkler until after the sprinkler nipple has been cutback to en-
sure desired placement of the sprinkler in relation to the outer surface of the wall. The lockring will
prove difficult to remove from the sprinkler once it has been installed behind the face of the wall.
Check finished product by temporarily installing the escutcheon plate onto the sprinkler without
the lockring. If necessary, re-cut the sprinkler nipple as required.
Once satisfied with the sprinkler location compared to the front of the wall, install the lockring and
the escutcheon plate following steps I through K on page 126 n. The escutcheon plate cannot be
removed after it has been installed with the lockring, so do not install the escutcheon plate with the
lockring until after the system has been tested.
A
TECHNICAL DATA INSTITUTIONAL STYLE
QUICK RESPONSE FLUSH
SIDEWALL SPRINKLER
August 29, 2003
OBSOLETE

chanical damage. Viking Institutional
Style Quick Response Flush Hori-
zontal Sidewall Sprinklers must be
installed below smooth, flat, horizon-
tal ceilings. The sprinklers must be
installed with the deflectors located
4" to 12" (102 mm to 304 mm) below
the ceiling, and flush with the wall in
which they are installed.
Always install horizontal sidewall
sprinklers with the top of the deflector
oriented parallel with the ceiling. The
wrench ear on the top of the Viking
Institutional Style Quick Response
Flush Horizontal Sidewall Sprinkler
is marked with the word “top”.
Before installing, be sure to have the
appropriate sprinkler model and
style, with the correct orifice size,
temperature rating, and response
characteristics. Install the sprinklers
accordingto thefollowingsequence:
1. Install all piping and cut the sprin-
kler nipple so that the ½" (15 mm)
NPT outlet of the reducing cou-
pling is at the desired location and
centered in a 2-1/4" (57,22 mm)
diameter opening in the wall (due
to the lockring).
Note: If the retaining flange as
-
sembly is to be used, slide the
flange over the sprinkler nipple
prior to threading the nipple into
the tee, as shown in Figure 3A.
2.The internal diameterof thespecial
Flush/Concealed Sprinkler Wrench
is designed for use with the sprin-
kler contained in the protective
plastic shell. With the sprinkler in
the shell, apply a small amount of
pipe-joint compound or tape to the
external threads of the sprinkler
only, taking care not to allow a
build-up of compound in the sprin-
kler inlet.
3. Refer to Figure 3B and use only
the special Flush/Concealed
Sprinkler Wrench, which is de-
signed for installing Viking Institu-
tional Style Quick Response
Flush Horizontal Sidewall Sprin-
klers. With the sprinkler in the
plastic protective shell, place the
unit into the wrench. DO NOT use
the fusible link to start or thread
the sprinkler into a fitting. Turn the
unit clockwise to thread the sprin-
kler into the coupling, taking care
not to over-tighten or damage the
sprinkler operating parts.
G. After installation, the entire sprinkler
system must be tested. The test must
be conducted to comply with the in-
stallation standards.
Make sure the sprinkler has been
properly tightened. If a thread leak
occurs, normally the sprinkler must
be removed, new pipe-joint com-
pound or tape applied, and then rein
-
stalled. This is due to the fact that
when the joint seal is damaged, the
sealing compound or tape is washed
out of the joint.
H. After testing, repairing all leaks, and
installing and painting the wall, re
-
move the plasticprotective shell from
the sprinkler.
INSTALLATION TIP: Do not install the
lockring onto the sprinkler until after the
sprinkler nipple has been cut back to en-
sure desired placement of the sprinkler
in relation to the outer surface of the
wall. The lockring will prove difficult to
remove from the sprinkler once it has
been installed behind the face of the
wall. Check finished product by tempo-
rarily installing the escutcheon plate
onto the sprinkler without the lockring,
using the Institutional Escutcheon In
-
stallation Wrench. If necessary, re-cut
the sprinkler nipple as required.
Once satisfied with sprinkler location
compared to the front of the wall, install
the lockring and the escutcheon plate
following steps I through K on this page.
The escutcheon plate cannot be re-
moved after it has been installed with
the lockring, so do not install the es-
cutcheon plate with the lockring until af-
ter the system has been tested.
I. As shown in Figures 3C and 3D, fit the
lockring over the open end of the pro-
tective sprinkler shell and use the
shell to gently press the lockring over
the threads of the sprinkler. The ring
must rest against the two wrench
ears of the sprinkler body with the
four arms of the lockring pointing out-
ward.
J. REMOVE THE PLASTIC PROTEC-
TIVE SHELL from the sprinkler.
(Recommendation: retain a protec
-
tive shell in the spare sprinkler cabi
-
net.)
K. As depicted in Figure 3E, use the In-
stitutional Escutcheon Installation
Wrench to screw on the escutcheon
plate clockwise. The face of the es
-
cutcheon plate is equipped with four
indentations to complement the de-
sign of the Institutional Escutcheon
Installation Wrench and facilitate in-
stallation of the escutcheon plate.
As the escutcheon plate is threaded
onto the sprinkler body, the four arms
of the lockring must fully engage with
the radialgrooves onthe inside of the
escutcheon plate. Continueto thread
the escutcheon plate onto the sprin-
kler body until the plate’s flange fits
tightly against the surface of the wall.
Then, proceed to turn the escutch
-
eon plate another ½ turn clockwiseto
ensure that it is secured to the wall.
The arms of the lockring are angled
and designed to wedge into the
coined radial grooves on the inside
face of the escutcheon plate to keep
the escutcheon plate from being un-
screwed. Thus, an attempt to remove
the escutcheon plate is prevented af-
ter it is installed with the lockring. DO
NOT MODIFY THE UNIT.
L. The retaining flange, located behind
the wall, must fit snug against the in
-
ner surface of the wall to prevent ver-
tical movement of the assembly. Use
a 1/8" hex wrench to tighten the re-
taining flange screw and secure the
assembly into place to prevent it from
being pulled through the wall.
M. DISASSEMBLY: Refer to section 9.
MAINTENANCE, paragraph D. and
follow all warnings and instructions.
9. MAINTENANCE
(Refer to Figures 1, 2, and 3.)
NOTICE: The owner is responsible for
maintaining the fire protection system
and devices in proper operating condi-
tion. For minimum maintenance and in
-
spection requirements, refer to the ap-
propriate National Fire Protection Asso
-
ciationstandardthatdescribes care and
maintenance of sprinkler systems. In
addition, the Authority Having Jurisdic-
tion may have additional maintenance
requirements that must be followed.
A. The sprinklers must be inspected on
a regular basis for corrosion, me-
chanical damage, obstructions,
paint, etc. The frequency of inspec
-
tions may vary due to corrosive at
-
mospheres, water supplies, and ac-
tivity around the device.
B. Sprinklers that have been painted or
mechanically damaged must be re-
placed immediately. Sprinklers
showing signs of corrosion shall be
tested and/or replaced immediately
as required. Installation standards
require sprinklers to be tested and, if
necessary,replaced after a specified
term of service. Refer to the installa
-
tion standards (e.g., NFPA 25) and
the Authority Having Jurisdiction for
the specified period of time after
which testing and/or replacement is
required. Sprinklers that have oper-
ated cannot be reassembled or re
-
used, but must be replaced. When
replacing sprinklers, use only new
sprinklers.
C. The sprinkler discharge pattern is
critical for proper fire protection.
Nothing should be hung from the
sprinkler, attached to it, or otherwise
obstruct the discharge pattern. All
obstructions must be immediately re-
moved or, if necessary, additional
sprinklers installed.
D. When replacing existing sprinklers,
the system must be removed from
service. Refer to the appropriate
Sprinkler 126 n
TECHNICAL DATA INSTITUTIONAL STYLE
QUICK RESPONSE FLUSH
SIDEWALL SPRINKLER
August 29, 2003
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system description and/or valve
instructions. Prior to removing the
system from service, notify all
Authorities Having Jurisdiction.
Consideration should be given to
employment of a fire patrol in the
affected area.
DISASSEMBLY: There are two
methods of sprinkler disassembly. In
Method 1, the escutcheon plate and
lockring are removed first, and then
the remaining sprinkler components
can be removed without being
destroyed. The second method of
removing the Viking Institutional
Style Quick Response Flush Hori-
zontal Sidewall Sprinkler results in
complete destruction of the unit.
Disassembly Method 1:
1. Remove the system from service,
drain all water, and relieve all pres
-
sure on the piping.
2. Use a drill (not available from Vi-
king) sized appropriately for use
with a spanner wrench (see step 3)
to make two holes through two op-
posite indentations on the face of
the escutcheon plate.
3. Use a 2-1/2" C-C spanner wrench
(Viking P/N 10729) to unthread the
escutcheon plate by turning it
counterclockwise. Make sure that
the sprinkler body does not turn or
loosen. The top surface of the hori-
zontal sidewall deflector should re
-
main parallel to the ceiling.
4. Remove the lockring from the
sprinkler body.
5. Place a protective sprinkler shell
(from the spare sprinkler cabinet)
over the sprinkler to be removed.
6. With the protective shell over the
sprinkler, place the special Flush/
Concealed Sprinkler Wrench over
the unit and turn it counterclock
-
wise to carefully unthread the
sprinkler body from the reducing
coupling.
7.Install the new unit using the Flush/
Concealed Sprinkler Wrench.
Care must be taken to ensure that
the replacement sprinkler is the
proper model and style, with the
appropriate orifice size, tempera-
ture rating, and response charac-
teristics. A fully stocked spare
sprinkler cabinet should be pro
-
vided for this purpose. (Stock of
spare lockrings and escutcheon
plates should be available in the
spare sprinkler cabinet in addition
to the spare sprinkler heads.)
8. Place the system back in service
and secure all valves. Check the
replaced sprinklers and repair all
leaks.
Disassembly Method 2:
1. Remove the system from service,
drain all water, and relieve all pres-
sure on the piping.
2. Disassemble and remove the fus-
ible element, and bend the deflec
-
tor and sealing assembly to ex-
pose the waterwayof thesprinkler.
3. Insert an easy-out screw extractor
(Trade No. 6) into the waterway.
Turn the easy-out counterclock
-
wise with a wrench to remove the
sprinkler assembly from the reduc-
ing coupling.
4.Install the new unit using the Flush/
Concealed Sprinkler Wrench.
Care must be taken to ensure that
the replacement sprinkler is the
proper model and style, with the
appropriate orifice size, tempera-
ture rating, and response charac-
teristics. A fully stocked spare
sprinkler cabinet should be pro
-
vided for this purpose. (Stock of
spare lockrings and escutcheon
plates should be available in the
spare sprinkler cabinet in addition
to the spare sprinkler heads.)
5. Place the system back in service
and secure all valves. Check the
replaced sprinklers and repair all
leaks.
E. Sprinkler systems that have been
subject to a fire must be returned to
service as soon as possible. The en-
tire system must be inspected for
damage and repaired or replaced as
necessary. Sprinklers that have
been exposed to corrosive products
of combustion or high ambient tem-
peratures, but have not operated,
should be replaced. Refer to the Au-
thority Having Jurisdiction for mini-
mum replacement requirements.
Sprinkler 126 o
NOTE: This method of disassembly
results complete destruction of the
unit. Therefore, none of the sprin-
kler components may be reused.
TECHNICAL DATA INSTITUTIONAL STYLE
QUICK RESPONSE FLUSH
SIDEWALL SPRINKLER
NOTE: This method of disassembly
results in damage to the escutcheon
plate and lockring, and they cannot
be reused.
August 29, 2003
OBSOLETE

Form No. F_101098
Replaces page 126 k-o, dated April 1, 2002
(updated the sprinkler materials list).
OBSOLETE