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Page 1 of 7 <br />® FREEDOM® RESIDENTIAL <br />CONCEALED PENDENT <br />SPRINKLER VK496 (K3.0) <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 Freedom@ Residential Concealed Pendent Sprinkler VK496 is a small <br />thermosensitive, glass -bulb residential sprinkler designed for installation on <br />concealed pipe systems where the appearance of a smooth ceiling is desired. The <br />orifice design allows the sprinkler's efficient use of available water supplies for the <br />hydraulically designed fire -protection system. The glass bulb operating element <br />and special deflector characteristics meet the challenges of residential sprinkler <br />standards. <br />Features: <br />• K3.0 (43.2 metric) <br />• Fast response glass bulb operating element. <br />• Integral threaded adapter cup accepts push -on or thread -on cover plates. <br />• Low -profile, small diameter, removeable cover plates offer almost flush <br />appearance upon installation and allow ease of maintenance. <br />• Protective cap prevents damage during installation and ceiling finishing and <br />keeps errant overspray from coating internal parts. <br />• Various finishes available to meet design requirements. <br />• Optional Electroless Nickel PTFE (ENT) coating provides corrosion resistance <br />(see Approval Chart). <br />2. LISTINGS AND APPROVALS <br />c 4L us cULusEU Listed: Category VKKW <br />Eu Refer to the Approval Charts and Design Criteria on for C-UL-US-EU Listing <br />requirements that must be followed. <br />3. TECHNICAL DATA <br />Specifications: <br />Minimum Operating Pressure: Refer to the Approval Chart. <br />Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 <br />psi (34.5 bar). <br />Thread size: 1/2" (15 mm) NPT <br />Nominal K-Factor: 3.0 U.S. (43.2 metric*) <br />Glass -bulb fluid temperature rated to -65 °F (-55 °C) <br />* Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the <br />metric K-factor shown by 10.0. <br />WARNING: Cancer and Reproductive Harm- <br />www. P65Warnings.ca.gov <br />Material Standards: <br />Sprinkler Body: Brass UNS-C84400 or QM Brass <br />Deflector: Phosphor Bronze UNS-051000 <br />Deflector Pins: Stainless Steel UNS-S30200 <br />Button: Brass UNS-C36000 <br />Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400 <br />Compression Screw: 18-8 Stainless Steel <br />Yoke: Phosphor Bronze UNS-051000 <br />Belleville Spring Sealing Assembly: Beryllium Nickel Alloy, coated on both sides with PTFE Tape <br />Cover Adapter: Cold Rolled Steel JIS G3141 and Carbon Steel UNS-G10100 (per JIS G3141) <br />Shipping Cap: High Density Polyethylene <br />Vibration damper ring: Buna-N Rubber SAE AS-568-017 <br />Cover Plate Materials: <br />Cover Plate Assembly: Copper UNS-C11000 and Brass UNS-C26800 or Stainless Steel UNS-S30400 <br />Spring: Beryllium Nickel <br />Solder: Eutectic <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 />releasing the deflector. Continued heating of the exposed sprinkler causes the heat -sensitive liquid in the glass bulb to expand, <br />causing the glass to shatter, releasing the yoke and pip cap and sealing spring assembly. Water flowing through the sprinkler orifice <br />strikes the deflector, forming a uniform spray pattern over a specific area of coverage determined by the water supply pressure at <br />the sprinkler to extinguish or control the fire. <br />Form No. F_032218 Rev 03 April 2023 Replaces Form No. F_032218 Rev 02 <br />(Replaced wrench 24339 with 23143.) <br />