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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 Mirage
Quick Response Extended Coverage Light Hazard ELO Concealed
®
Pendent Sprinkler VK636 is a thermosensitive solder link spray sprinkler designed
for installation on concealed pipe systems where the appearance of a smooth
ceiling is desired. The 11.2K sprinkler meets Light Hazard density requirements at
lower pressures than 5.6K or 8.0K sprinklers. The fusible operating element and
special deflector characteristics meet the challenges of quick response extended
coverage standards.
The sprinkler is pre-assembled with a threaded adapter for installation with a low-
profile cover assembly that provides up to ½" (13 mm) of vertical adjustment. The
two-piece design allows installation and testing of the sprinkler prior to installation
of the cover plate. The "push-on" and "thread-on" designs of the concealed cover
plate assemblies allow easy installation of the cover plate after the system has
been tested and the ceiling finish has been applied. The cover assembly can be
removed and reinstalled, allowing temporary removal of ceiling panels without
taking the sprinkler system out of service or removing the sprinkler.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
Refer to the Approval Chart and Design Criteria for Listing requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 2010.
Minimum Operating Pressure: 7 psi (0.5 bar).
Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 3/4" NPT
Nominal K-Factor: 11.2 U.S. (161.3 metric*)
* Metric K-factor measurement is shown in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Material Standards:
Sprinkler Body: Brass UNS-C84400
Deflector: Brass UNS-C23000 or Bronze UNS-C51000
Deflector Pins: Stainless Steel
Fusible Element Assembly: Nickel Alloy and Eutectic Solder
Lever and Lever Bar: Stainless Steel
Seat: Bronze UNS-C31400/UNS-C31600
Deflector Carrier: Brass UNS-C84400 or QM Brass
Screw: Brass UNS-C36000
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Cover Adapter: Cold Rolled Steel UNS-G10080, Finish: Clear Chromate over Zinc Plating
Cover Assembly Materials:
Cover: Brass UNS-C26800
Base: Cold Rolled Steel UNS-G10060/G10080, Finish: Copper Flash
Springs: Nickel Alloy
Solder: Non-eutectic
Ordering Information: Refer to Tables 1 and 2 (Also refer to the current Viking price list.)
4. INSTALLATION
Refer to appropriate NFPA Installation Standards.
Form No. F_121009 Rev 02
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
September 2023
MIRAGE
QR EXTENDED
®
COVERAGE LIGHT HAZARD
ELO CONCEALED PENDENT
SPRINKLER VK636 (K11.2)
For Light Hazard Occupancies Only
Replaces Form No. F_121009 Rev 01
(Updated 135F cover plate temp. to 139F.)
Page 1 of 5
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Summary of Contents for Viking MIRAGE VK636
- Page 1 Base: Cold Rolled Steel UNS-G10060/G10080, Finish: Copper Flash Springs: Nickel Alloy Solder: Non-eutectic Ordering Information: Refer to Tables 1 and 2 (Also refer to the current Viking price list.) 4. INSTALLATION Refer to appropriate NFPA Installation Standards. Replaces Form No. F_121009 Rev 01 Form No.
-
Page 2: Technical Data
Refer to NFPA 25 for Inspection, Testing and Maintenance requirements. 7. AVAILABILITY The Viking Model VK636 Sprinkler is available through a network of domestic and international distributors. See The Viking Corporation website for the closest distributor or contact The Viking Corporation. - Page 3 Part number shown is the base part number. For complete part number, refer to current Viking price list schedule. Where a dash (-) is shown in the Finish suffix designation, insert the desired Temperature Rating suffix. See example above.
- Page 4 Footnotes Part number shown is the base part number. For complete part number, refer to current Viking price list schedule. 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.
- Page 5 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 Figure 2: Sprinkler Installation and Correct Use of Wrenches Figure 3: Sprinkler Dimensions and Cover Installation Replaces Form No.
- Page 6 Refer to the appropriate technical data page and NFPA standards for complete care, handling, installation, and maintenance instructions. For additional product and system information Viking data pages and installation instructions are available on the Viking Web site at www.vikinggroupinc.com.
- Page 7 * Refer to the appropriate current technical data pages for complete care, handling, and installation instructions. Data pages are included with each shipment from Viking or Viking distributors. They can also be found on the Web site at www. vikinggroupinc.com.
- Page 8 • while ceiling finish work is being completed. Use only the designated Viking recessed sprinkler wrench (refer to the appropriate sprinkler data page) to install these sprinklers. NOTE: The protective cap is • temporarily removed during installation and then placed back on the sprinkler for protection until finish work is completed.
- Page 9 Take care not to crack the wax coating on the units. • For touching up the wax coating after installation, wax is available from Viking in bar form. Refer to Table 1 below. The coating MUST be repaired after •...
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Page 10: Listings And Approvals
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 11 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.
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Page 12: Installation
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 13: 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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