Viking VK426 Technical Data Manual

Viking VK426 Technical Data Manual

Institutional sprinklers k5.6

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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
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. Additionally, the VK427 can be used as
Standard Response (FM only). 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
FM Approved: Class 2015 (VK427 ONLY)
* Refer to the Approval Charts 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
Deflector: Pendent - Copper UNS-C23000 or UNS-C51000, 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.)
Form No. F_032319
Rev 02
© 2023 Viking Group Inc. All rights reserved
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
January 2023
INSTITUTIONAL SPRINKLERS K5.6
SIN
VK426
VK650
VK427
VK651
VK426
VK650
VK427
VK651
1. VK427 is FM Approved as Standard Response (SR)
(Added alternate deflector material; revised design criteria; removed UNS-C84400
Page 1 of 10
THREAD
DESCRIPTION
NPT
QR Pendent
NPT
QR EC Pendent
NPT
QR or SR
HSW
1
NPT
QR EC HSW
BSPT
QR Pendent
BSPT
QR EC Pendent
BSPT
QR or SR
HSW
1
BSPT
QR EC HSW
Replaces F_032319 Rev 01
)

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Summary of Contents for Viking VK426

  • Page 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: techsvcs@vikingcorp.com Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com 1. DESCRIPTION Viking Institutional Style Sprinklers are small, flush, solder link and lever sprinklers made with tamper-resistant construction.
  • Page 2 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 sprinkler.
  • Page 3 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 Horizontal Sidewall Pendent Sprinkler Type...
  • Page 4: Installation Tip

    General Information: The tamper-resistant design of the Viking Institutional Sprinklers is dependant upon proper installation as outlined in this document as well as proper piping design and installation. Proper installation ensures that the sprinkler assembly will be held in place by the force of the escutcheon pressing outward on the sprinkler body.
  • Page 5 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 Procedure: NOTE: If the retaining flange assembly is to be used, slide the flange over the sprinkler drop nipple prior to threading the nipple into the branch line tee.
  • Page 6 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 Ensure the escutcheon plate is tight against the ceiling.
  • Page 7: Operation

    The sprinkler piping behind the wall leading to the sprinkler must be secured to prevent any movement of the sprinkler. One method of anchoring the pipe behind the wall is to use the retaining flange and screw assembly that are available from Viking. The flange slides over the sprinkler nipple prior to threading the nipple into the tee.
  • Page 8 (RAL9006) Footnotes Base Part number is shown. For complete part number, refer to Viking’s current price schedule. This table shows the listings and approvals available at the time of printing. Check with the manufacturer for any additional approvals. Other colors are available upon request with the same Listings and Approvals as the standard colors.
  • Page 9 STANDARD COVERAGE PENDENT cULus Listing Requirements: The sprinkler VK426 is cULus Listed as a Quick Response, Flush, Pendent Sprinkler as indicated in the Approval Chart for installation in accordance with the latest edition of NFPA 13. The following requirements must be followed: •...
  • Page 10: Technical Data

    Viking sprinklers are to be installed in accordance with the latest edition of Viking Technical Data, the appropriate standards of NFPA, LPCB, APSAD, VdS or other similar organizations, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable.
  • Page 11: Listings And Approvals

    STANDARD RESPONSE, QUICK RESPONSE, EXTENDED COVERAGE, AND DRY SPRINKLERS Viking thermosensitive spray sprinklers consist of a small frame and either a glass bulb or a fusible operating element. Available styles include pendent, flush pendent, concealed pendent, upright, horizontal sidewall, vertical sidewall, or conventional, depending on the particular sprinkler model selected.
  • Page 12 C. Installation Instructions - Dry Sprinklers WARNING: Viking dry sprinklers are to be installed in the 1” outlet (for dry and preaction systems), or run of malleable, ductile iron, or Nibco CPVC* threaded tee fittings (for wet systems) that meet the dimensional requirements of ANSI B16.3 (Class 150), or cast iron threaded tee fittings that meet the dimensional requirements of ANSI B16.4 (Class 125), even at branch line ends.
  • Page 13 4. After installation, the entire sprinkler system must be tested. The test must be conducted to comply with the installation stand- ards. Viking high pressure sprinklers may be hydrostatically tested at a maximum of 300 psi (20.7 bar) for limited periods of time (two hours), for the purpose of acceptance by the Authority Having Jurisdiction.
  • Page 14 Refer to the Authority Having Jurisdiction for minimum replacement requirements. 7. AVAILABILITY Viking sprinklers are available through a network of domestic and international distributors. See The Viking Corporation web site for the closest distributor or contact The Viking Corporation.
  • Page 15 1. DESCRIPTION Viking fire sprinklers consist of a threaded frame with a specific waterway or orifice size and a deflector for distributing water in a specified pattern. A closed or sealed sprinkler refers to a complete assembly, including the thermosensitive operating element. An open sprinkler does not use an operating element and is open at all times.
  • Page 16 TECHNICAL DATA SPRINKLER OVERVIEW 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 VERTICAL SIDEWALL (VSW) SPRINKLER: A sprinkler intended for installation near the wall and ceiling. The deflector provides a water spray pattern outward in a quarter-spherical pattern and can be installed in the upright or pendent position with the flow arrow in the direction of discharge.
  • Page 17 Refer to NFPA 25 for Inspection, Testing and Maintenance requirements. 7. AVAILABILITY Viking sprinklers are available through a network of domestic and international distributors. See The Viking Corporation web site for the closest distributor or contact The Viking Corporation. 8. GUARANTEE For details of warranty, refer to Viking’s current list price schedule or contact Viking directly.
  • Page 18: Warranty Terms And Conditions

    For more information, go to www.P65Warnings.ca.gov 2. WARRANTY TERMS AND CONDITIONS For details of warranty, refer to Viking’s current list price schedule at www.vikinggroupinc.com or contact Viking directly. New Bulletin Form No. F_111218 18.11.15...

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