MICROFAST
®
QUICK
RESPONSE FUSIBLE
ELEMENT PENDENT
SPRINKLER VK353 (K8.0)
TECHNICAL DATA
Page 4 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 1 (UL)
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
Listings and Approvals
3
(Refer also to Design Criteria.)
NPT
BSP
U.S.
metric
2
Inches
mm
cULus
4
VdS
LPCB
18274
VK353
Pendent
3/4”
20 mm
8.0
115.2
2-5/16
59
A1X, B1Y
--
--
--
18273
6
VK353
Pendent
1/2”
15 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
--
--
--
13967
6
VK353
Pendent
1/2”
15 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, Chrome, White Polyester
5
,
Black Polyester
5
, and Black
PTFE
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 listings and approvals available at the time of printing. Other approvals may be in process.
4
Listed by Underwriters Laboratories Inc. for use in the U.S. and Canada.
5
Other colors are available on request with the same Listings and Approvals as the standard colors.
6
The 1/2” NPT Large Orifice Sprinkler is Listed and Approved for retrofit only.
DESIGN CRITERIA - UL
(Also refer to Approval Chart 1 above.)
cULus Listing Requirements:
Quick Response Fusible Element Pendent Sprinkler VK353 is cULus Listed as indicated in the Approval Chart for installation in accordance with the
latest edition of NFPA 13 for standard spray sprinklers.
•
Designed for use in Light and Ordinary Hazard occupancies.
•
The sprinkler installation rules contained in NFPA 13 for standard spray pendent sprinklers must be followed.
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.
