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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 Concealed Pendent Sprinkler
®
VK632 and VK634 are thermosensitive glass-bulb spray sprinkler designed for
installation on concealed pipe systems where the appearance of a smooth ceiling is
desired. The glass bulb 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" (12.7 mm) of vertical adjustment. The
two-piece design allows installation and testing of the sprinkler prior to installation of
the cover plate. The 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.
The Electroless Nickel PTFE (ENT) coating has been investigated for installation
in corrosive environments and is listed and approved as indicated in the Approval
Charts. The ENT finish is only available for the sprinkler assembly, the cover plate is
not plated.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
Refer to the Approval Chart and Design Criteria for cULus Listing requirements that
must be followed.
3. TECHNICAL DATA
Specifications:
Available since 2007.
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 sizes: VK632: 1/2" (15 mm) NPT; VK634: 3/4" (20 mm) NPT
Nominal K-Factors: VK632: 5.6 U.S. (80.6 metric*); VK634: 8.0 U.S. (115.2 metric*)
* Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the metric
K-factor shown by 10.0.
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Patents Pending
Material Standards:
Sprinkler Body: Brass UNS-C84400
Deflector: Copper UNS-C19500
Deflector Pins: Stainless Steel Alloy
Bulb: Glass, nominal 3 mm diameter
Pip Cap: Leaded Bronze UNS-C31400 or UNS-C31600, or Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel
UNS-S30400
Button: Brass UNS-C36000
Screws: 18-8 Stainless Steel
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Yoke: Phosphor Bronze UNS-C51000
Cover Adapter: Cold Rolled Steel UNS-G10080, Finish: Clear Chromate over Zinc Plating
Cover Assembly Materials:
Cover: Copper UNS-C11000
Base: Brass UNS-C26000 or UNS-C26800
Springs: Nickel Alloy
Solder: Eutectic
Ordering Information: The sprinkler and cover plate must be ordered separately. Refer to Tables 1 and 2.
4. INSTALLATION
Refer to appropriate NFPA Installation Standards.
Form No. F_080107
Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
April 2023
MIRAGE
QUICK RESPONSE
®
EXTENDED COVERAGE
CONCEALED PENDENT
SPRINKLERS
(VK632 AND VK634)
For Light Hazard Occupancies Only
Replaces Form No. F_080107 Rev 20.2
(Adding venting statement (s))
Page 1 of 6
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Table of Contents
Related Manuals for Viking MIRAGE VK632
Summary of Contents for Viking MIRAGE VK632
- Page 1 (VK632 AND VK634) 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 Mirage Quick Response Extended Coverage Concealed Pendent Sprinkler ®...
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Page 2: Technical Data
Refer to NFPA 25 for Inspection, Testing and Maintenance requirements. 7. AVAILABILITY Viking Sprinklers VK632 and VK634 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 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.
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Page 5: Design Criteria
F_080614 for general care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest edition of Viking technical data, the appropriate standards of NFPA, FM Global, LPCB, APSAD, VdS or other similar organizations, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable. - Page 6 (VK632 AND VK634) 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 Maximum Minimum 1/2” (15 mm) NPT 2”...
- Page 7 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 8 * 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 9 • 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 10 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 11: 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 12 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 13: 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 14: 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...