ESFR DRY PENDENT SPRINKLER
VK512 K25.2 (GROOVED)
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: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
Page 6 of 8
Form No. F_071221 Rev 001 12.10.2021
5. APPROVAL DESIGN REQUIREMENTS
5.1 FM Approval Requirements
The VK512 is FM Approved as a quick response pendent Storage sprinkler. Sprinklers are to be installed in accordance with the
latest edition of Viking technical data, the latest standards of FM Global Loss Prevention Data Sheets including 2-0 and 8-9 and
any other Authorities Having Jurisdiction, and also with provisions of governmental codes, ordinances, and standards whenever
applicable.
5.5.1 Protecting Dry Pendent Sprinklers
Refer to FM 2-0 and Figure 4. Maintain a minimum 12” (300 mm) vertical distance between the top of the area’s ceiling and the
overhead sprinkler piping that will feed the dry-pendent sprinklers.
5.5.2 NFPA Requirement for Minimum Exposed Barrel Lengths
Refer to the latest edition of NFPA 13. Where dry sprinklers are connected to wet pipe sprinkler systems protecting areas subject
to freezing temperatures, the minimum exposed length of the barrel of the dry sprinkler shall be in accordance with Table 3 below.
Figure 4: Min
i
mum Exposed Barrel Length
Exposed barrel
Table 3: NFPA Exposed Barrel Lengths For Dry Sprinklers
Ambient Temperature of the Protected
Area at the discharge end of the Sprinkler
Exposed Barrel Ambient Temperature
40
°
F (4
°
C)
50
°
F (10
°
C)
60
°
F (16
°
C)
Minimum Exposed Barrel Lengths (based on ambient temperaures above)
Inches (mm) Inches (mm) Inches (mm)
40 °F (4 °C)
0
0
0
30 °F (-1 °C)
0
0
0
20 °F (-7 °C)
4 (100)
0
0
10 °F (-12 °C)
8 (200)
1 (25)
0
0 °F (-18 °C)
12 (300)
3 (75)
0
-10 °F (-23 °C)
14 (350)
4 (100)
1 (25)
-20 °F (-29 °C)
14 (350)
6 (150)
3 (75)
-30 °F (-34 °C)
16 (400)
8 (200)
4 (100)
-40 °F (-40 °C)
18 (450)
8 (200)
4 (100)
-50 °F (-46 °C)
20 (500)
10 (250)
6 (150)
-60 °F (-51 °C)
20 (500)
10 (250)
6 (150)
