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INSTITUTIONAL SPRINKLERS K5.6

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 1 of 9

Form No. F_032319    20.01.03     Rev 20.1

© 2020 Viking Group Inc. All rights reserved

1.  DESCRIPTION

Viking Institutional Style Sprinklers are small, flush, solder link and lever sprinklers 

made with tamper-resistant construction. These flush-mount sprinklers can be 

ordered as Quick Response, Quick Response-Extended Coverage, and as Pendent 

or Horizontal Sidewall configurations. Viking institutional sprinklers have been 

specifically designed for use with concealed piping in institutional mental health 

occupancies, correctional facilities, or anywhere a likelihood of tampering with fire 

sprinklers by the occupants may exist.

The institutional sprinkler assembly consists of the sprinkler body and a 3 or 4 inch 

escutcheon plate. The sprinkler and escutcheon plate are available with a polished 

chrome or painted finish. 

2.  LISTINGS AND APPROVALS*

cULus Listed

: Category VNIV

Pendent: cULus Listed as Quick Response Flush sprinklers for standard areas of 

coverage in Light or Ordinary Hazard occupancies. 
EC Pendent: cULus Listed as Quick Response, Extended Coverage Flush sprinklers 

for extended areas of coverage up to 16’ x 16’ (4.9 m x 4.9 m) in Light Hazard 

occupancies only.
HSW: cULus Listed as Quick Response Flush sprinklers for standard areas of coverage 

in Light or Ordinary Hazard occupancies  below smooth, flat, horizontal ceilings only.
EC HSW: cULus Listed as Quick Response, Extended Coverage Flush sprinklers for 

extended areas of coverage up to 16’ x 16’ (4.9 m x 4.9 m) in Light Hazard occupancies 

only below smooth, flat, horizontal ceilings.

*  Refer to the Approval Chart and Design Criteria for requirements that must be followed.

 NOTICE

 

THE VIKING CORPORATION DISCLAIMS ANY RESPONSIBILITY FOR 

DAMAGES OR INJURY (INCLUDING DEATH) CAUSED BY THE OPERATION 

OR INOPERATION OF SPRINKLERS ARISING OUT OF THE MISUSE OF OR 

TAMPERING WITH VIKING BRAND SPRINKLERS INCLUDING, WITHOUT 

LIMITATION, ANY PERSONAL INJURY OR DEATH ARISING OUT OF OR 

CAUSED BY THE MANIPULATION OF, DISMANTLING OF, OR ATTEMPTED 

USE OF THE SPRINKLER OR ANY COMPONENT AS AN INSTRUMENT 

UNRELATED TO ITS INTENDED USE.  

3.  TECHNICAL DATA

Specifications:

Minimum Operating Pressure: 7 psi (0.5 bar)

Rated to: 175 psi (12 bar) water working pressure. 

Factory tested hydrostatically to 500 psi (34.5 bar).

Thread size: 1/2” NPT or 15 mm BSPT

Nominal K-factor: 5.6 U.S. (80.6 metric**)

** Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the 

metric K-factor shown by 10.0.

Material Standards:

Sprinkler Body: QM Brass or UNS-C84400 Casting

Deflector: Pendent - Copper UNS-C23000, HSW - Copper UNS-C51000

Deflector Pins: Stainless Steel 302

Button: UNS-C36000

Compression Screw: Brass UNS-C36000

Fusible Link Assembly: UNS-C51910 and Eutectic Solder

Fusible Link Levers: Stainless Steel UNS-S31600 

Lever Bar: Copper Alloy UNS-C72500  

Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape

Seat: UNS-C31400 or UNS-C31600 Bronze 1/2 to full hard  

Pin Ring: Pendent - Copper UNS-C23000, HSW - Copper UNS-C51000

Ordering Information: (Refer to Table 1 and the current Viking List Price Book.)

SIN

THREAD DESCRIPTION

VK426 NPT

QR Pendent

VK650 NPT

QR EC Pendent

VK427 NPT

QR HSW

VK651 NPT

QR EC HSW

VK426 BSPT

QR Pendent

VK650 BSPT

QR EC Pendent

VK427 BSPT

QR HSW

VK651 BSPT

QR EC HSW

Replaces F_032319 Rev 19.2

(Replaced escutcheon PNs)

Summary of Contents for K5-6

Page 1: ...erage Flush sprinklers for extended areas of coverage up to 16 x 16 4 9 m x 4 9 m in Light Hazard occupancies only below smooth flat horizontal ceilings Refer to the Approval Chart and Design Criteria for requirements that must be followed NOTICE THE VIKING CORPORATION DISCLAIMS ANY RESPONSIBILITY FOR DAMAGES OR INJURY INCLUDING DEATH CAUSED BY THE OPERATION OR INOPERATION OF SPRINKLERS ARISING OU...

Page 2: ...96 QR EC HSW 22907 VK651 15 4 100 mm 23197 Examples Sprinkler 19663MC RAL9006 VK426 Quick Response Pendent with Painted gray Finish and 165 F 74 C Nominal tempera ture 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 sprink...

Page 3: ...1 03 Rev 20 1 2020 Viking Group Inc All rights reserved Figure 3 Sprinkler Components and Identification Horizontal Sidewall Pendent Pendent Deflector Sprinkler Type indicator Sprinkler Type indicator Horizontal Sidewall Deflector Sprinkler Data Location Stamped around the permimeter you will find Sprinkler Identification Number SIN K factor Coverage No mark for Standard Coverage and EC for Extend...

Page 4: ...orporation Flush sprinklers are decorative sprinklers and may be considered special purpose As such some Authorities may limit the use depending on the occupancy classification Refer to the Authority Having Jurisdiction prior to installation General Information The tamper resistant design of the Viking Institutional Sprinklers is dependant upon proper installation as outlined in this document as w...

Page 5: ...king on the protective cap Place the sprinkler wrench over the protective cap on the sprinkler body NOTE The wrench is uniquely designed to fit over the sprinkler cap and into the sprinkler in a specific alignment 6 Install the sprinkler into the fitting NOTE The Escutcheon plate MUST be tight against the ceiling or wall 7 Tighten the sprinkler to approximately 7 14 ft lbs 8 If desired use a level...

Page 6: ...sleeve 2 I D Cored Hole OR 2 Sch 40 Steel pipe sleeve Figure 5 Installation Dimensions Pendent Figure 6 Installation Dimensions HSW Upon activation the deflector actuates to approximately 7 8 22 mm beyond the sprinkler body 1 5 16 33 mm 1 4 6 mm 3 or 4 75 or 100 mm Face of fitting to finished surface of wall 7 8 22 mm Ensure the escutcheon plate is tight against the ceiling Ensure the escutcheon p...

Page 7: ... and or replaced immediately as required Installation standards require sprinklers to be tested and if necessary replaced after a specified term of service Refer to the installation standards and the Authority Having Jurisdiction for the specified period of time after which testing and or replacement is required Sprinklers that have operated cannot be reassembled or reused but must be replaced Whe...

Page 8: ...part number refer to Viking s current price schedule 2 This table shows the listings and approvals available at the time of printing Check with the manufacturer for any additional approvals 3 Other colors are available upon request with the same Listings and Approvals as the standard colors LISTED FLOW RATES AND COVERAGE AREAS LIGHT HAZARD FOR Viking EXTENDED COVERAGE Institutional Sprinklers Spri...

Page 9: ...nkler must be installed in the horizontal sidewall position in fixed fire protection systems wet dry deluge or preaction systems Orient the top of the deflector parallel with the ceiling The wrench ear on the top of the Viking Institutional Style Quick Response Flush Horizontal Sidewall Sprinkler is marked with the word top Must be located with deflector 4 to 12 102 mm to 304 mm below the ceiling ...

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