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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: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page: www.vikinggroupinc.com
NPT Thread Size
Base Part
SIN
Number
1
Inches
10625
VK520
21361
VK520
6
Approved Temperature Ratings
A - 165 °F (74 °C)
Base part number shown. For complete part number, refer to the price list.
1
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
2
10.0.
This chart shows listings and approvals available at the time of printing. Other approvals may be in process.
3
FM Approved as a quick response upright Non-Storage sprinkler and also FM Approved as a quick response upright Storage sprinkler. Refer to
4
Design Criteria.
Accepted for use, City of New York Department of Buildings, MEA 89-92-E, Vol. 18.
5
Approved according to China GB Standard.
6
COMMODITY SELECTION AND DESIGN CRITERIA OVERVIEW FOR MODEL VK520 ESFR PENDENT SPRINKLERS
Storage Type
Sprinkler Type
Response Type
System Type
Temperature Rating(s) ºF (ºC)
Open Frame Single, Double, Multiple-Row, or Portable Rack Storage of Class I-IV
and Group A or B Plastics
Solid Pile or Palletized Storage of Class I-IV and Group A or B Plastics
Idle Pallet Storage
Rubber Tire Storage
Rolled Paper Storage (Refer to the standard.)
Flammable Liquid Storage (Refer to the standard.)
Aerosol Storage (Refer to the standard.)
Automotive Components in Portable Racks (Control mode only, refer to the standard.)
IMPORTANT: Always refer to Bulletin Form No. F_091699 - Care and Handling of Sprinklers. Viking ESFR Pendent Sprinklers
are to be installed in accordance with the latest edition of Viking technical data, the latest standards of FM Global, VdS, LPCB,
and any other Authorities Having Jurisdiction, and also with provisions of governmental codes, ordinances, and standards
whenever applicable.
Form No. F_060298 19.11.15
ESFR Upright Sprinkler VK520
Maximum 175 PSI (12 bar) WWP
Nominal
K-Factor
mm
U.S.
3/4"
20
14.0
--
20
14.0
B - 205 °F (96 °C)
Rev 19.2
TECHNICAL DATA
Approval Chart
Overall Length
metric
Inches
mm
2
202
3-3/8
86
202
3-3/8
86
Footnotes
TABLE 2
ESFR UPRIGHT SPRINKLER
SIN VK520 (K14.0)
FM
NYC
VdS
LPCB
5
A1, B1
A1
--
--
A1
--
--
--
Approved Finish
1 - Brass
FM
Storage
QR
Wet Pipe system only
165 ºF (74 ºC) and 205 (96 ºC)
Refer to FM 2-0 and 8-9.
Refer to FM 2-0 and 8-9.
Refer to FM 2-0, 8-9, and 8-24.
Refer to FM 2-0 and 8-3.
Refer to FM 8-21.
Refer to FM 7-29
Refer to FM 7-31
N/A
Replaces Form No. F_060298 Rev 19.1
(Revised China approval; removed 19786)
Page 5 of 5
China Approval
--
A1
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