VK3522 QUICK RESPONSE
PENDENT SPRINKLER (K8.0)
TECHNICAL DATA
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
Page 2 of 6
Form No. F_021416 Rev 22.1 March 3, 2022
TABLE 1: ORDERING INFORMATION
Instructions: Using the sprinkler base part number,
(1) add the suffix for the desired Finish
(2) add the suffix for the desired Temperature Rating.
Sprinkler
Base Part
No.
Size
1: Finishes
2: Temperature Ratings
NPT
Inch
BSPT
mm
Description
Suffix
1
Nominal Rating
Bulb Color Max. Ambient Ceiling
Temperature
3
Suffix
19921
1/2
--
Brass
A
135 °F (57 °C)
Orange
100 °F (38 °C)
A
19933
--
15
Chrome
F
155 °F (68 °C)
Red
100 °F (38 °C)
B
White Polyester
4,6
M-/W
175 °F (79 °C)
Yellow
150 °F (65 °C)
D
Black Polyester
4,6
M-/B
200 °F (93 °C)
Green
150 °F (65 °C)
E
ENT
4,5,6
JN
286 °F (141 °C)
Blue
225 °F (107 °C)
G
Open
--
--
Z
Example
: 19921MB/W = VK3522 with White Polyester Finish and 155 °F (68 °C) Nominal temperature rating. This sprinkler is to be
installed into an area with a maximum ambient temperature of 100 °F (38 °C) meaning if the area will experience temperatures above
the maximum ambient rating, you shall use a higher temperature-rated sprinkler.
Accessories
Sprinkler Wrenches (see Figure 1):
A. Installer Wrench: Part No. 22055 (available since 2017)
B. Cabinet Wrench: Part No. 20901M/B (available since 2017)
C. Recessed Socket Wrench: Part No. 20951M/B
2
(available since 2017)
D. Straight Wrench: Part No. 22940MB
Sprinkler Cabinet:
A. Up to 6 sprinklers: Part number 01724A (available since 1971)
B. 6-12 Sprinklers: Part number 01725A (available since 1971)
Footnotes
1
Where a dash (-) is shown in the Finish suffix designation, insert the desired Temperature Rating suffix. See example above.
2
Requires a 1/2” ratchet which is not available from Viking.
3
Based on NFPA 13, NFPA 13R, and NFPA 13D. Other limits may apply, depending on fire loading, sprinkler location, and other requirements of the Authority Having
Jurisdiction. Refer to specific installation standards.
4
cULus Listed as corrosion resistant.
5
FM Approved as corrosion resistant.
6
The corrosion resistant coatings have passed the standard corrosion test required by the approving agencies indicated in the Approval Chart. These tests cannot and
do not represent all possible corrosive environments. Prior to installation, verify through the end-user that the coatings are compatible with or suitable for the proposed
environment. For automatic sprinklers, the ENT coating is applied to all exposed exterior surfaces, including the waterway.
Figure 2: Sprinkler Dimensions
7/16” (11 mm)
Nominal Pipe
Engagement
1-15/16”
(49 mm)
1/2” NPT
15 mm BSPT
Figure 1: Sprinkler Wrenches
A
B
C
D
