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Page 1 of 5 <br /> MIRAGE° QUICK RESPONSE <br /> ELO CONCEALED PENDENT I I U:N:G:* SPRINKLER VK469 (K11.2) <br /> The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 <br /> Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com <br /> Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com <br /> 1. DESCRIPTION <br /> Viking Mirage° Quick Response ELO Concealed Pendent Sprinkler SIN VK469 is <br /> a thermosensitive solder link spray sprinkler designed for installation on concealed <br /> pipe systems where the appearance of a smooth ceiling is desired. The sprinkler <br /> is pre-assembled with a threaded adapter for installation with a low profile cover <br /> assembly that provides up to'/z"(13 mm)of vertical adjustment.The two-piece design <br /> allows installation and testing of the sprinkler prior to installation of the cover plate. <br /> The "push-on" and "thread-on" designs of the concealed cover plate assemblies 7-11%ans-4-sk <br /> allow easy installation of the cover plate after the system has been tested and the JW <br /> ceiling finish has been applied. The cover assembly can be removed and reinstalled, <br /> allowing temporary removal of ceiling panels without taking the sprinkler system out <br /> of service or removing the sprinkler. The Electroless Nickel PTFE (ENT) coating has <br /> been investigated for installation in corrosive environments and is listed and approved <br /> as indicated in the Approval Charts. The ENT finish is only available for the sprinkler <br /> assembly, the cover plate is not plated. <br /> The extra-large orifice provides greater flows at lower pressures than standard orifice <br /> or large orifice sprinklers. This feature allows higher densities of water to be applied WARNING:Cancer and Reproductive Harm- <br /> when limited water pressure is available. www.P65Warnings.ca.gov <br /> Viking Quick Response Extra-Large Orifice Sprinklers may eliminate the need for a fire <br /> pump or reduce the size of the pump if it is required. On existing systems, replacing <br /> large orifice sprinklers with extra-large orifice sprinklers may provide the higher <br /> densities required to allow an increase in the hazard classification of an occupancy. <br /> 2. LISTINGS AND APPROVALS <br /> c u. �scULus Listed: Category VNIV <br /> NOTE: This sprinkler is NOT listed for storage applications and cannot be used for the protection of storage. <br /> Refer to the Approval Chart and Design Criteria cULus Listing requirements that must be followed. <br /> 3. TECHNICAL DATA <br /> Specifications: <br /> Available since 2009. <br /> Minimum Operating Pressure: 7 psi (0.5 bar). <br /> Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar). <br /> Thread size: 3/4" (20 mm) NPT <br /> Nominal K-Factor: 11.2 U.S. (161.3 metric) <br /> * Metric K-factor measurement is shown in bar.When pressure is measured in kPa,divide the metric K-factor shown by 10.0. <br /> Patents Pending <br /> Material Standards: <br /> Sprinkler Body: Brass UNS-C84400 <br /> Deflector: Phosphor Bronze UNS-051000 <br /> Deflector Pins: Stainless Steel <br /> Fusible Element Assembly: Nickel Alloy and Eutectic Solder <br /> Lever and Lever Bar: Stainless Steel <br /> Seat: Bronze UNS-C31400/UNS-C31600 <br /> Button: Brass UNS-C36000 <br /> Screw: Brass UNS-C36000 <br /> Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE tape <br /> Cover Adapter: Cold Rolled Steel UNS-G10080, Finish: Clear Chromate over Zinc Plating <br /> Cover Assembly Materials: <br /> Cover: Brass UNS-C26800 <br /> Base: Cold Rolled Steel UNS-G10060/G10080, Finish: Copper Flash <br /> Springs: Nickel Alloy <br /> Solder: Non-eutectic <br /> Ordering Information: The sprinkler and cover plate must be ordered separately. Refer to Tables 1 and 2. <br /> 4. INSTALLATION <br /> Refer to appropriate NFPA Installation Standards. <br /> 5. OPERATION <br /> During fire conditions, when the temperature around the sprinkler approaches its operating temperature, the cover plate detaches. <br /> Continued heating of the exposed sprinkler causes the heat-sensitive fusible element assembly to disengage, releasing seat and <br /> sealing spring assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern <br /> to extinguish or control the fire. <br /> Form No. F_120508 Rev 02 September 2023 Replaces Form No. F_120508 Rev 01 <br /> (Updated 135F cover plate temp.to 139F.) <br />