MICROFAST
®
QUICK RESPONSE
PENDENT SPRINKLER
VK3311 (K4.2)
TECHNICAL DATA
Page 3 of 5
Form No. F_061914 19.02.21 Rev 19.1
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.
TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES
Sprinkler Temperature
Classification
Sprinkler Nominal
Temperature Rating
1
Maximum Ambient
Ceiling Temperature
2
Bulb Color
Ordinary
135 °F (57 °C)
100 °F (38 °C)
Orange
Ordinary
155 °F (68 °C)
100 °F (38 °C)
Red
Intermediate
175 °F (79 °C)
150 °F (65 °C)
Yellow
Intermediate
200 °F (93 °C)
150 °F (65 °C)
Green
High
286 °F (141 °C)
225 °F (107 °C)
Blue
Sprinkler Finishes:
Brass, Chrome, White Polyester, Black Polyester, and Black PTFE
Corrosion-Resistant Coatings
3
:
White Polyester, Black Polyester, and Black PTFE
Footnotes
1
The sprinkler temperature rating is stamped on the deflector.
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 the standard corrosion test required by the approving agencies indicated in the Approval Charts. These
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 and PTFE coatings.
Figure 2:
Wrench 13655W/B for Recessed Pendent Sprinklers
Carefully slide the wrench sideways around
the protective cap, ensuring engagement with
the sprinkler wrench flats
Sprinkler wrench 13655W/B**
for recessed pendent
sprinklers
** A 1/2” ratchet is required
(not available from Viking)
