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Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.
5. OPERATION
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. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern
to extinguish or control the fire.
6. INSPECTIONS, TESTS AND MAINTENANCE
Refer to NFPA 25 for Inspection, Testing and Maintenance requirements.
7. AVAILABILITY
The Viking Microfast
®
tors. See The Viking Corporation web site for the closest distributor or contact The Viking Corporation.
8. GUARANTEE
For details of warranty, refer to Viking's current list price schedule or contact Viking directly.
Sprinkler Temperature
Classification
Ordinary
Ordinary
Intermediate
Intermediate
High
Sprinkler Finishes: Brass, Chrome, White Polyester, and Black Polyester
Corrosion-Resistant Coatings
The sprinkler temperature rating is stamped on the deflector.
1
Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location, and other requirements of the Authority Having Jurisdiction.
2
Refer to specific installation standards.
The corrosion-resistant coatings have passed the standard corrosion test required by the approving agencies indicated in the Approval Charts. These
3
tests cannot and do not represent all possible corrosive environments. Prior to installation, verify through the end-user that the coatings are compat-
ible with or suitable for the proposed environment. For automatic sprinklers, the coatings indicated are applied to the exposed exterior surfaces only.
Note that the spring is exposed on sprinklers with Polyester coatings.
Form No. F_061614
18.11.05
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Quick Response Upright Sprinkler VK3271 is available through a network of domestic and international distribu-
TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES
Sprinkler Nominal
Temperature Rating
135 °F (57 °C)
155 °F (68 °C)
175 °F (79 °C)
200 °F (93 °C)
286 °F (141 °C)
: White Polyester and Black Polyester
3
Protective Sprinkler Cap
Wrench Flat
Standard Sprinkler Wrench 21475M/B
Rev 17.2.P65
TECHNICAL DATA
1
Footnotes
Figure 1:
MICROFAST
RESPONSE UPRIGHT
SPRINKLER VK3271 (K4.2)
Maximum Ambient
Ceiling Temperature
2
100 °F (38 °C)
100 °F (38 °C)
150 °F (65 °C)
150 °F (65 °C)
225 °F (107 °C)
Page 2 of 3
QUICK
®
Bulb Color
Orange
Red
Yellow
Green
Blue
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