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ESFR PENDENT SPRINKLER 

VK500 (K14.0)

TECHNICAL DATA

Page 1 of 6

Form No. F_060198    18.06.21    Rev 18.1

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

1.  DESCRIPTION

Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler VK500 is a fast 

response fusible element type sprinkler designed for early fire suppression. With a 14.0 

(202 metric*) nominal K-Factor and special deflector, this sprinkler produces large, 

high-momentum water droplets in a hemispheric pattern below the deflector. This 

permits penetration of the fire plume and direct wetting of the burning fuel surface while 

cooling the atmosphere early in the development of a high-challenge fire.
Viking VK500 ESFR Pendent Sprinklers may be used in the protection of ordinary types 

of storage. However, they are primarily intended to protect the following types of stor-

age, which tend to produce severe-challenge fires: palletized and solid pile storage and 

single, double, multiple row, and portable open rack storage (no open-top containers 

or solid shelves).
Viking ESFR Pendent VK500 Sprinklers provide protection of most common storage 

materials, including: 

--Encapsulated or unencapsulated Class I, II, III, and IV commodities*.

--Cartoned and uncartoned unexpanded plastics*.

--Cartoned and uncartoned expanded plastics*.

* Refer the Approval Charts and Design Criteria on pages 3-4 for cULus Listing and FM Approval 

requirements that must be followed.

In addition, some storage arrangements of rolled paper, aerosols, and rubber tires may 

be protected by Viking ESFR Pendent Sprinkler VK500.

2.  LISTINGS AND APPROVALS

cULus Listed: 

Category VNWH

FM Approved:

 Class 2008

NYC Approved:

 MEA 89-92-E, Volume 18

VdS Approved:

 Certificate G4010001 

CE Certified: 

Standard CUAP11.03/03, EC-certificate of conformity 1725-CPD-H0005, ETA-10/0306

CCCF Approved: 

Approved by the China Certification Center for Fire Products (CCCF)

The 10284 and 11350, VK500, ESFR Pendent Sprinkler Assembly conforms to the provision of CUAP11.03/03 standard.
CUAP11.03/03 approvals are provided by: FM Approvals Ltd. 1 Windsor Dials Windsor, Berkshire, UK. SL4 1 RS 
Approval Certificate No. issued December 20, 2010.

NOTE: 

Other International approval certificates are available upon request.

Refer Approval Chart 1 and Design Criteria on page 3 for cULus Listing requirements that must be followed, and refer to Approval 

Chart 2 and Design Criteria on page 4 for FM Approval requirements that must be followed.

3.  TECHNICAL DATA

Specifications:

Available since 2000.

Minimum Operating Pressure: Refer to NFPA 13 or FM Global Loss Prevention Data Sheets.

Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).

Thread size: 3/4” (20 mm) NPT 

Nominal K-Factor: 14.0 U.S. (202 metric**)

**Metric K-factor measurement shown is when pressure is measured in bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.

Overall Length: 2-7/8” (73 mm)

Deflector Diameter: 1-3/4” (44.5 mm)

Material Standards:

Frame Casting: Brass UNS-C84400 

Deflector: Phosphor Bronze UNS-C51000

Replaces Form No. F_060198 Rev 17.1

(Revised  mages.)      

Summary of Contents for VK500

Page 1: ...eria on pages 3 4 for cULus Listing and FM Approval requirements that must be followed In addition some storage arrangements of rolled paper aerosols and rubber tires may be protected by Viking ESFR Pendent Sprinkler VK500 2 LISTINGS AND APPROVALS cULus Listed Category VNWH FM Approved Class 2008 NYC Approved MEA 89 92 E Volume 18 VdS Approved Certificate G4010001 CE Certified Standard CUAP11 03 0...

Page 2: ... Suffix 165 F 74 C C 205 F 96 C E For example sprinkler 10284 with a Brass finish and a 165 F 74 C temperature rating Part No 10284AC Available Finishes And Temperature Ratings Refer to Table 1 Accessories Also refer to the Viking website Sprinkler Wrench Part No 13635WB double ended wrench Use Side A Side B is for use with K25 2 ESFR Pendent Sprinkler VK510 Available since 2006 Sprinkler Cabinet ...

Page 3: ... Sprinkler 10284 is cULus Listed as indicated in Approval Chart 1 for installation in accordance with the latest appropriate NFPA stan dards including NFPA 13 for ESFR Pendent K14 0 202 bar Sprinklers Maximum Roof or Ceiling Slope 2 in 12 167 mm m or 9 5 degrees Sprinkler Position Approved for use only in the pendent position Align the deflector parallel with the ceiling or roof System Type Wet sy...

Page 4: ...er Refer to Design Criteria below DESIGN CRITERIA FM Also refer to Approval Chart 2 above FM Approval Requirements 1 Sprinkler VK500 is FM Approved as a quick response pendent Storage sprinkler as indicated in the FM Approval Guide For specific application and installation requirements reference the latest applicable FM Loss Prevention Data Sheets including Data Sheets 2 0 and 8 9 2 Sprinkler VK50...

Page 5: ...sealing compound or tape is washed out of the joint Immediately replace any damaged units using the special sprinkler wrench only F After installation and testing and repairing of all leaks remove the protective caps from the sprinklers DO NOT use any type of tool to remove the cap Remove the cap by hand turn it slightly and pull it off the sprinkler When removing caps use care to prevent dislodgi...

Page 6: ...e instructions Prior to removing the system from service notify all Authorities Having Jurisdiction Consideration should be given to employment of a fire patrol in the affected area 1 Remove the system from service drain all water and relieve all pressure on the piping 2 Using the special sprinkler wrench remove the old sprinkler and install the new unit Care must be taken to ensure that the repla...

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