Viking VK514 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

1. DESCRIPTION

Viking Specific Application Early Suppression Fast Response (ESFR) Pendent
Sprinkler VK514 incorporates the capability to suppress specific high-challenge fires.
The addition of a larger K-Factor allows protection of higher hazard commodities at
greater ceiling heights with lower end-head pressures. K28.0 ESFR sprinklers can:
• Eliminate the use of in-rack sprinklers when protecting high-piled storage of certain
specified materials up to 43 ft. (13.1 m) with ceilings up to 48 ft. (14.6 m)*
• Reduce or eliminate the need for a system fire pump.
• Provide flexibility when sizing system piping.
Viking VK514 ESFR Pendent Sprinklers are primarily intended to protect the following
types of storage, which tend to produce severe-challenge fires: palletized and solid
pile storage and single, double, and portable open rack storage (no open-top contain-
ers or solid shelves). The VK514 is listed to utilize a minimum aisle width of 6'-0".
Viking ESFR Pendent VK514 Sprinklers provide protection of most common storage
materials, including:
• Encapsulated or unencapsulated Class I, II, III, and IV commodities*.
• UL Listed for protection of cartoned non-expanded plastic commodities*.
* Refer the Approval Charts and Design Criteria for UL Listing requirements that must be followed.

2. LISTINGS AND APPROVALS

UL Listed: Category VNWH (Listed as a Specific Application ESFR Sprinkler)
Refer to Approval Chart 1 and Design Criteria for UL Listing requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 1" NPT for Sprinkler 19591, 25 mm BSP for Sprinkler 19592
Nominal K-Factor: 28.0 U.S. (404 metric*)
* Metric K-factor measurement shown is in bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Overall Length: 3-3/16" (81 mm)
Deflector Diameter: 1-3/4" (45 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 PTFE 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 VK514 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 VK514 with 1" NPT threads, Brass finish, and 165 °F
(74 °C) temperature rating = Part No. 19591AC.
Available Finishes And Temperature Ratings: Refer to Table 1.
Accessories: (Also refer to the "Sprinkler Accessories" section of the Viking data book.)
Form No. F_010715 Rev 15.1
TECHNICAL DATA
SPECIFIC APPLICATION
ESFR PENDENT SPRINKLER
VK514 (K28.0)
Up to
Ceiling Pressure
Height
48 ft 35 psi
(14.6 m) (2.4 bar)
Viking Technical Data may be found on
The Viking Corporation's Web site at
http://www.vikinggroupinc.com.
The Web site may include a more recent
edition of this Technical Data Page.
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Flow
166 gpm
(628 lpm)
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