ESFR PENDENT
SPRINKLER VK510 (K25.2)
TECHNICAL DATA
Page 2 of 7
Form No. F_100102 20.01.23 Rev 20.1
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
Overall Length: 3-3/16” (81 mm)
Deflector Diameter: 1-3/4” (44.5 mm)
Covered by one or more of the following patents: US5,829,532; US6,059,044; US6,336,509; US6,502,643; US6,868,917; AU722593; GB2336777
Material Standards:
Frame Casting: Brass UNS-C84400
Deflector: Phosphor Bronze UNS-C51000
Seat: Copper UNS-C11000 and Stainless Steel UNS-S30400
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Teflon Tape
Compression Screw: Stainless Steel UNS-S31603
Trigger and Support: Stainless Steel UNS-S31600
Fusible Element Assembly: Beryllium Nickel, coated with black acrylic paint.
Ordering Information:
(Also refer to the current Viking price list.)
Order ESFR Pendent Sprinkler VK510 by first adding the appropriate suffix for the sprinkler finish and then the appropriate suffix
for the temperature rating to sprinkler base part number.
Finish Suffix: Brass = A
Temperature Suffix: 165 °F (74 °C) = C, 205 °F (96 °C) = E
For example, Sprinkler VK510 with 1” NPT threads, Brass finish, and 165 °F (74 °C) temperature rating = Part No. 12080AC.
Accessories:
(Also refer to the Viking website.)
Sprinkler Wrenches:
A. Part No. 13635W/B (double-ended wrench - Use Side B. Side A is for use with K14.0 ESFR Pendent Sprinkler VK500)
Available since 2006.
Sprinkler Cabinet:
Six-head capacity: Part No. 01731A (available since 1971)
4. INSTALLATION
A. Sprinklers must be handled with care. They must be stored in a cool, dry place in their original shipping container. Never
install sprinklers that have been dropped or damaged in any way. Such sprinklers should be destroyed immediately.
NOTE
: Wet pipe systems must be provided with adequate heat.
B. The sprinklers must be installed after the piping is in place to prevent mechanical damage. Before installing, be sure to have the
appropriate sprinkler model and style, with the correct orifice size, temperature rating, and response characteristics.
C. With the sprinkler contained in the plastic protective cap, apply a small amount of pipe-joint compound or tape to the male
threads only, while taking care not to allow a build-up of compound in the sprinkler orifice.
D. Use ONLY sprinkler wrench 13635W/B (shown in Figure 1) for installing ESFR Sprinkler VK510! With the sprinkler
contained in the protective cap, install the sprinkler onto the piping by applying the sprinkler wrench to the sprinkler
wrench flats only, while taking care not to damage the sprinkler operating parts.
• DO NOT use any other type of wrench, as this could damage the unit.
• DO NOT use the sprinkler deflector or fusible element to start or thread the sprinkler into a fitting.
• DO NOT exceed 20-30 ft. lbs. of torque (hand tight plus 1 to 1-1/2 tuirns with the wrench; over-tightening may distort the
sprinkler inlet with consequent leakage or impairment of the sprinkler.
E. After installation, the entire sprinkler system must be tested. The test must be conducted to comply with the Installation
Standards. Make sure the sprinkler has been properly tightened. If a thread leak occurs, normally the unit must be removed,
new pipe-joint compound or tape applied, and then reinstalled. This is due to the fact that when the joint seal is damaged,
the sealing compound or tape is washed out of the joint. Immediately replace any damaged units, using the special sprinkler
wrench only.
WARNING
Viking sprinklers are manufactured and tested to meet rigid requirements of the approving agencies. The sprinklers
are designed to be installed in accordance with recognized installation standards or FM Global Loss Prevention Data
Sheets. System design must be based on ESFR design guidelines described in the latest edition of the applicable FM
Global Loss Prevention Data Sheets, the latest NFPA Standards, the latest standards of Verband der Sachversicherer
(VdS), Loss Prevention Council (LPCB), the Authorities Having Jurisdiction, and also with the provisions of govern-
mental codes, ordinances, and standards whenever applicable. Deviation from the standards or any alteration to the
sprinkler after it leaves the factory including, but not limited to: painting, plating, coating, or modification, may render
the sprinkler inoperative and will automatically nullify the approval and any guarantee made by The Viking Corporation.
