MICROFAST
®
QUICK
RESPONSE FUSIBLE
ELEMENT PENDENT
SPRINKLER VK353 (K8.0)
TECHNICAL DATA
Page 5 of 6
Form No. F_071814 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.
Approval Chart 2 (FM)
The Viking Microfast
®
Quick Response
Pendent Sprinkler
VK353
Maximum 175 PSI (12 Bar) WWP
Base Part
Number
1
SIN
Sprinkler
Style
Thread Size
Nominal K-Factor
Overall Length
FM Approvals
3
(Refer also to Design Criteria.)
NPT
BSP
U.S.
metric
2
Inches
mm
18274
VK353
Pendent
3/4”
20 mm
8.0
115.2
2-5/16
59
A1X, B1Y
NOTICE - Product Below - Limited Availability (Contact Local Viking Office)
13975
VK353
Pendent
3/4”
20 mm
8.0
115.2
2-5/16
59
A1X, B1Y
Approved Temperature Ratings
A - 165 °F (74 °C), 205 °F (96 °C), and 280 °F (138 °C)
B - 165 °F (74 °C) and 205 °F (96 °C)
Approved Finishes
1 - Brass and Chrome
Approved Escutcheons
X - Standard surface-mounted escutcheon
Y - Standard surface-mounted escutcheon or recessed
with the Viking Micromatic® Model E-1, E-2, or E-3
Recessed Escutcheon
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 FM Approvals available at the time of printing. Other approvals may be in process.
4
Other colors are available on request with the same Approvals as the standard colors.
5
FM approved as corrosion resistant.
DESIGN CRITERIA - FM
(Also refer to Approval Chart 2 above.)
FM Approval Requirements:
The Viking Microfast
®
Quick Response Fusible Element Pendent Sprinkler VK353 is FM Approved as quick response
Non-storage
pendent sprinklers as indicated in the FM Approval Guide. For specific application and installation requirements, reference the latest
applicable FM Loss Prevention Data Sheets (including Data Sheet 2-0). FM Global Loss Prevention Data Sheets contain guidelines
relating to, but not limited to: minimum water supply requirements, hydraulic design, ceiling slope and obstructions, minimum and
maximum allowable spacing, and deflector distance below the ceiling.
NOTE: The FM installation guidelines may differ from cULus and/or NFPA criteria.
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, LPCB, APSAD, VdS or other similar organizations, and
also with the provisions of governmental codes, ordinances, and standards, whenever applicable.
