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Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
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Base Part
SIN
Number
1
14073
VK503
14818
VK503
19856
VK503
20372
VK503
Approved Temperature Ratings
A - 165 °F (74 °C) and 205 °F (96 °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 10.0.
2
This chart shows listings and approvals available at the time of printing. Other approvals may be in process.
3
Refer to the latest standards of NFPA 13.
4
Listed by Underwriters Laboratories Inc. for use in the U.S. and Canada.
5
Accepted for use, City of New York Department of Buildings, MEA Number 89-92-E, Vol. 41.
6
Base Part
SIN
Inches
Number
1
14073
VK503
14818
VK503
Approved Temperature Ratings
A - 165 °F (74 °C) and 205 °F (96 °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 10.0.
2
This chart shows the FM Approvals available at the time of printing. Other approvals may be in process.
3
FM Approved as a quick response pendent Non-Storage sprinkler and also FM Approved as a quick response pendent Storage sprinkler. Refer to
4
Design Criteria below.
Form No. F_120106
18.10.11
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Approval Chart 1 (UL)
ESFR Pendent Sprinkler VK503
Maximum 175 PSI (12 bar) WWP
NPT Thread Size
Inches
mm
NPT
BSPT
3/4"
--
--
20 mm
--
20 mm
--
20 mm
B - 165 °F (74 °C)
Approval Chart 2 (FM)
ESFR Pendent Sprinkler VK503
Maximum 175 PSI (12 bar) WWP
Thread Size
Nominal K-Factor
mm
U.S.
NPT
BSPT
3/4"
--
16.8
--
20 mm
16.8
Rev 18.2
TECHNICAL DATA
Nominal
Overall Length
K-Factor
U.S.
metric
Inches
2
16.8
242
2-7/8
16.8
242
2-7/8
16.8
242
2-7/8
16.8
242
2-7/8
Footnotes
Overall Length
metric
Inches
2
242
2-7/8
242
2-7/8
Footnotes
ESFR PENDENT SPRINKLER
VK503 (K16.8)
Listings and Approvals
(Refer also to Design Criteria on page 4.)
mm
cULus
NYC
5
6
73
A1
A1
73
A1
A1
73
--
--
73
--
--
Approved Finish
1 - Brass
FM Approvals
(Refer also to Design Criteria below.)
mm
73
73
Approved Finish
1 - Brass
Page 5 of 6
3,4
--
--
--
--
--
B1
--
B1
3,4
A1
A1
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