FLAT SPRAY PENDENT
SPRINKLERS VK920 (K80)
AND VK922 (K115)
TECHNICAL DATA
August 1, 2008
The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-945-4495 Email: [email protected]
Approval Chart
Flat Spray Pendent Sprinklers
Maximum 175 PSI (12 bar) WWP
Sprinkler
Base
Part No.
1
Sprrinkler
Style
SIN
Thread Size
Nominal
K-Factor
Overall
Length
Listings and Approvals
3
(Refer also to Design Criteria on page 127e.)
NPT
BSP
U.S.
metric
2
Inches
mm
cULus
FM
VdS
LPCB
Standard Orifice
15111
Pendent
3
VK920
1/2”
15 mm
5.6
80.6
2-1/4”
58
--
--
A1
--
--
--
Large Orifice
15112
Pendent
3
VK922
3/4”
20 mm
8.0
115.2
2-5/16”
59
--
--
A1
--
--
--
Approved Temperature Ratings
A - 155 °F (68 °C), 175 °F (79 °C), and 200 °F (93 °C)
Approved Finishes
1 - Brass and Chrome-Enloy
®
Footnotes
1
Base part number is shown. For complete part number, refer to Viking’s current price schedule.
2
Metric K-factor shown is for use when pressure is measured in bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
3
This chart shows the listings and approvals available at the time of printing. Check with the manufacturer for any additional approvals.
Sprinkler 127c
Figure 2:
Sprinkler Dimensions
H. After installation and testing and repairing of all leaks, remove the protective shields from the sprinklers. To remove
the shield, simply pull the ends of the shield apart where it is snapped together. THE SHIELDS MUST BE REMOVED
FROM SPRINKLERS BEFORE PLACING THE SYSTEM IN SERVICE!
I. If it is necessary to remove the entire sprinkler unit, the system must be taken out of service. See section 6. INSPECTIONS,
TESTS, AND MAINTENANCE and follow all warnings and instructions.
5. OPERATION
During fire conditions, the heat-sensitive liquid in the glass bulb expands, causing the glass to shatter, releasing the pip cap and
sealing spring assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern
to extinguish or control the fire.
OBSOLETE
