Viking Microfast M Technical Data

May 27, 1999
1. PRODUCT NAME
Viking Microfast Model M Quick
®
Response Sprinkler
Styles: Upright, Pendent, and
•
Conventional
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 Quick
Response Sprinkler is
thermosensitive glass-bulb
sprinkler. The pip-cap and sealing
assembly of the sprinkler is held in place
by a rugged 3 mm glass bulb.
®
Viking Microfast Model M Quick
Response Sprinklers are available in
three styles with several finishes,
temperature ratings, and orifice sizes to
meet design requirements. The special
®
polyester and Teflon coatings can be
used in decorative applications where
colors are desired. In addition, these two
finishes are corrosion resistant and
provide protection against
corrosive environments.
During fire conditions,
temperature around the
reaches its operating temperature, the
heat-sensitive liquid in the glass bulb
expands, causing the bulb to shatter,
releasing the pip-cap and sealing spring
assembly. Water flowing through the
sprinkler orifice strikes the sprinkler
deflector, forming a uniform spray
pattern to extinguish or control the fire.
4. TECHNICAL DATA
LISTINGS AND APPROVALS
Refer to Table 2 on page 51 c.
Glass-bulb fluid temperature rated to
-65 °F (-55 °C).
Rated to 175 psi (1 207 kPa) water
working 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
Minimum operating pressure: 7 psi (48,3
kPa)
SPRINKLER MATERIALS
Frame: Brass Castings UNS-C84400
Form No. F_080488
TECHNICAL DATA
Sprin kler
Tem per a ture
Clas si fi ca tion
Or di nary
Or di nary
a small,
In ter me di ate
spray
In ter me di ate
High
Sprinkler Finishes: Brass, Bright Brass, Chrome-Enloy
3
ester , Navajo White Poly es ter
1
Based on Na tional Fire Pre ven tion and Con trol Ad min is tra tion Con tract No. 7-34860.
2
Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location,
and other requirements of the Authority Having Jurisdiction. Refer to specific installation
standards.
3
The corrosion-resistant coatings have passed standard corrosion tests required by
particular approving agencies. Refer to the approval chart on page 51 c. These tests can-
not and do not represent all possible corrosive environments. Prior to installation, verify
through the end-user that the coatings are compatible with or suitable for the proposed
environment. The coatings indicated are applied to the exposed exterior surfaces only.
many
NOTE: The sprinkler is exposed on the Polyester-Coated and Teflon
when the
sprinkler
Deflector: Brass UNS-C26000
Bushing: Brass UNS-C36000
Bulb: Glass, nominal 3 mm diameter
Seal: Teflon
Spring: Nickel Alloy
Screw: Brass UNS-C36000
Pip Cap: Copper UNS-C11000 and
Stainless Steel UNS-S30400
Polyester-Coated Sprinklers:
Spring: Nickel Alloy, exposed
Screw: Brass UNS-C36000
Painted for appearance only.
Pip Cap: Copper UNS-C11000 and
Stainless Steel UNS-S30400
Teflon ® -Coated Sprinklers:
Spring: Nickel Alloy, exposed
Screw: Brass UNS-C36000
Painted black for appearance only.
Pip Cap: Copper UNS-C11000 and
Stainless Steel UNS-S30400,
®
Teflon
ACCESSORIES
Sprinkler Wrenches:
Standard Wrench: Part No. 05000CW/B
•
Nom i nal Sprin kler
Tem per a ture Rat ing
(Fusing Point)
Temp. Al lowed
135 °F (57 °C)
155 °F (68 °C)
175 °F (79 °C)
200 °F (93 °C)
266 °F (130 °C)
286 °F (141 °C)
3
, Black Polyester
Foot notes
® Tape
Coated
Replaces sprinkler page 51 a-d, dated June 18, 1998
(revised pip-cap materials).
Microfast MODEL M
®
QUICK RESPONSE
SPRINKLER
Ceil ing Tem per a ture at Sprin kler
Max. Am bi ent Max. Rec om mended
1
Am bi ent Temp.
115 °F (46 °C) 100 °F (38 °C)
135 °F (57 °C) 100 °F (38 °C)
155 °F (68 °C) 150 °F (65 °C)
150 °F (65 °C)
180 °F (82 °C)
225 °F (107 °C)
®
(patents pending), White Poly-
3
, and Black Teflon
®
Ta ble 1
Wrench for coated and recessed
•
®
Microfast Sprinklers: Part No.
07398W*
* A ½" ratchet is required (not available from
Viking).
Refer to the
ACCESSORIES" section of the Viking
Engineering and Design Data book for
technical data
escutcheons and other accessories.
5. AVAILABILITY AND SERVICE
Viking sprinklers are available through a
network of domestic, Canadian, and
international distributors.
Yellow Pages of the telephone directory
for a local dis trib u tor (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.
Sprinkler 51 a
Bulb
Color
2
Or ange
Red
Yel low
Green
Blue
®3
-coated sprinklers.
"SPRINKLER
on approved
See the