Viking MICROFAST M Technical Data

January 28, 1999
1. PRODUCT NAME
®
Viking Microfast Model M
Residential Horizontal Sidewall
Sprinkler Base Part No. 06769B
2. MANUFACTURER
The Viking Corporation
210 N. Industrial Park Road
Hastings, Michigan 49058, USA
Telephone: (616) 945-9501
(877) 384-5464
Fax: (616) 945-9599
e-mail: techsvcs@vikingcorp.com
3. PRODUCT DESCRIPTION
®
The Viking Microfast Model M Residen-
tial Horizontal Sidewall Sprinkler is a
small, high-sensitivity, glass-bulb spray
sprinkler. The sprinkler is available in
several finishes, with temperature rat-
ings to meet design requirements. The
orifice design, with a K-factor of 5.5,
allows efficient use of available water
supplies for the hydraulically designed
fire-protection system.
The small, rugged 3 mm glass bulb and
special deflector combine speed of op-
eration and area of coverage to meet
residential sprinkler standards while be-
ing aesthetically pleasing. During fire
conditions, the heat-sensitive liquid in
the glass bulb expands, causing the
glass to shatter, releasing the pip cap
and sealing spring assembly. The water
flowing through the sprinkler orifice
strikes the sprinkler deflector, forming a
uniform spray pattern to extinguish or
control the fire.
4. TECHNICAL DATA
See approval chart on page 142 c for
approvals.
See chart for minimum water supply re-
quirements and maximum areas of
coverage.
Glass-bulb fluid temperature rated to
-65 °F (-55 °C).
Rated to 175 psi (1 207 kPa) water work-
ing pressure.
Factory tested hydrostatically to 500 psi
(3 448 kPa).
Spring: USA Patent No. 4,167,974
Bulb: USA Patent No. 4,796,710
Testing: USA Patent No. 4,831,870
Thread Size: 1/2" (15 mm) NPT
Orifice Size: Nominal 1/2" (15 mm)
K-factor: 5.5 (7,9 metric*)
*See Footnote 7 on approval chart on
page 142 c.
SPRINKLER MATERIALS
Frame - Brass Castings UNS-C84400
Units of measure in parentheses may be approximations.
Form No. F_080588
TECHNICAL DATA
Deflector - Copper UNS-C19500
Bulb - Glass, nominal 3 mm diameter
®
Seal - Teflon Tape
Spring - Nickel Alloy
Screw - Brass UNS-C36000
Pip Cap - Copper UNS-C14500
ACCESSORIES
Sprinkler Wrenches:
Standard: Part No. 05000CW/B
Recessed: Part No. 07398W
Refer to "SPRINKLER ACCESSORIES"
for escutcheons.
5. AVAILABILITY AND SERVICE
Viking sprinklers are available through a
network of domestic, Canadian, and in-
ternational distributors. See the Yellow
Pages of the telephone directory for a
local distributor (listed under "Sprinklers-
Automatic-Fire") or contact Viking.
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
For details of warranty, refer to Viking's
current price schedule or contact The
Viking Corporation directly.
7. INSTALLATION
WARNING: Viking sprinklers are manu-
factured and tested to meet the rigid
requirements of approving agencies.
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, or modification, may render
MICROFAST
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
the sprinkler inoperative, and will auto-
matically nullify the approval and any
guarantee made by The Viking Corpora-
tion.
A. Sprinklers are to be installed in ac-
cordance with the latest published
standards of the National Fire Protec-
tion Association, Factory Mutual,
Loss Prevention Council, Assemblee
Pleniere, Verband der Sachver-
sicherer or other similar organiza-
tions, and also with provisions of gov-
ernmental codes, ordinances, and
standards whenever applicable. For
conditions not specifically covered by
the Standards, refer to the "Viking
Residential Installation Guide". Final
approval and acceptance of all
residential sprinkler installations
must be obtained from the Author-
ity Having Jurisdiction. Residential
sprinklers are special-service sprin-
klers for use in one- and two- family
dwellings, mobile homes, and resi-
dential portions of other occupan-
cies, where allowed. The use of resi-
dential horizontal sidewall sprinklers
may be limited due to occupancy and
hazard. The minimum flow rate indi-
cated for a listed area of coverage
must be provided at the sprinkler.
Therefore, the system must be hy-
draulically calculated. 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 container.
Never install sprinklers that have
been dropped or damaged in any
way. Never install any glass-bulb
sprinkler if the bulb is cracked or if
there is a loss of liquid from the bulb.
If a glass bulb lacks the appropriate
amount of fluid, it should be set aside
and returned to Viking (or an author-
ized distributor) for analysis as soon
as possible. If the sprinkler is not re-
turned to Viking, it should be de-
stroyed immediately. Never install
sprinklers which have been exposed
to temperatures in excess of maxi-
mum ambient temperature allowed.
Such sprinklers should be destroyed
immediately.
C. Corrosion-resistant sprinklers must
be installed when subject to corrosive
atmospheres. Viking Microfast
Model M Residential Horizontal Side-
wall Sprinklers are not intended for
use in corrosive environments.
D. Use care when locating sprinklers
near fixtures that can generate heat.
Do not install sprinklers where they
Replaces sprinkler page 142 a-c, dated May 14, 1998
(updated approved escutcheons list).
Sprinkler 142 a
®
MODEL M
®