MICROFAST
®
QUICK
RESPONSE VERTICAL
SIDEWALL SPRINKLER
VK337 (K4.2)
TECHNICAL DATA
Page 3 of 3
Form No. F_050300 18.11.05 Rev 17.1.P65
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.
Approval Chart
Microfast
®
Quick Response Vertical Sidewall Sprinklers
Base Part
Number
1
SIN
Maximum
Pressure
Thread Size
Nominal
K-Factor
Overall Length
Listings and Approvals
3
(Refer also to Design Criteria below.)
NPT
BSP
U.S.
metric
2
Inches
mm
cULus
FM
4
NYC
LPCB
Small Orifice
08985
VK337
175 psi
--
10 mm
4.2
57
2-1/4
58
--
--
--
--
--
--
Approved Temperature Ratings
A - 135 °F (57 °C), 155 °F (68 °C), 175 °F (79 °C),
200 °F (93 °C), and 286 °F (141 °C)
Approved Finishes
1 - Chrome
Approved Escutcheons
Z - Installed with standard surface-mounted escutch-
eons only
Footnotes
1
Base part number shown. For complete part number, refer to Viking’s current price schedule.
2
Metric K-factor measurement shown is when pressure is measured in Bar. When pressure is measured in kPa, divide the metric K-factor shown by
10.0.
3
This table shows the listings and approvals available at the time of printing. Other approvals may be in process.
4
Viking vertical sidewall sprinklers may be installed pendent or upright.
IMPORTANT: Always refer to Bulletin Form No. F_091699 - Care and Handling of Sprinklers. Also refer to Form No. F_080614
for general care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest
edition of Viking technical data, the appropriate standards of NFPA, FM Global, LPCB, APSAD, VdS or other similar organiza-
tions, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable.
Replaces Form No. F_050300 Rev 17.1
(Added P65 Warning.)
