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Page 1 of 4 <br /> ® MICROFAST° QUICK <br /> NIKJNG4 RESPONSE UPRIGHT <br /> SPRINKLER VK300 (K5.6) <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 /> 1. DESCRIPTION <br /> The Viking Microfast® Quick Response Upright Sprinkler VK300 is a small, <br /> thermosensitive, glass-bulb spray sprinkler available in several differ- <br /> ent finishes and temperature ratings to meet design requirements. The spe- <br /> cial Polyester and Electroless Nickel PTFE (ENT) coatings can be used in <br /> decorative applications where colors are desired. In addition, these coat- <br /> ings have been investigated for installation in corrosive atmospheres and <br /> are listed/approved as corrosion resistant as indicated in the Approval <br /> Charts. (Note: FM global approves the ENT coating as corrosion resistant. FM <br /> Global has no approval classification Polyester coatings as corrosion resistant.) <br /> 2. LISTINGS AND APPROVALS <br /> cULus Listed: Category VNIV <br /> FM FM Approved: Classes 2002 and 2020 <br /> Refer to Approval Chart 1 and Design Criteria on for cULus Listing requirements and refer to Approval Chart 2 and Design Criteria <br /> FM Approval requirements that must be followed. <br /> 3. TECHNICAL DATA <br /> Specifications: <br /> Minimum Operating Pressure: 7 psi (0.5 bar)* <br /> Maximum Working Pressure: 175 psi (12 bar)wwp. <br /> Factory tested hydrostatically to 500 psi (34.5 bar) <br /> Testing: U.S.A. Patent No. 4,831,870 <br /> Thread size: 1/2" NPT, 15 mm BSP <br /> Nominal K-Factor: 5.6 U.S. (80.6 metric**) <br /> Glass-bulb fluid temperature rated to-65 °F (-55 °C) <br /> Overall Length: 2-3/16" (56 mm) <br /> `Wl_us Listing, FM Approval, and NFPA 13 installs require a minimum of 7 psi (0.5 bar). The minimum operating pressure for LPCB and CE <br /> Approvals ONLY is 5 psi (0.35 bar). <br /> Material Standards: <br /> Frame Casting: Brass UNS-C84400 or QM Brass Viking Technical Data may be found on <br /> Deflector: Brass UNS-C23000 or Copper UNS-C19500 The Viking Corporation's Web site at <br /> Bulb: Glass, nominal 3 mm diameter http://www.vikinggroupinc.com. <br /> Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with The Web site may include a more recent <br /> PTFE Tape <br /> Screw: Brass UNS-C36000 edition of this Technical Data Page. <br /> Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS- <br /> S30400 <br /> For Polyester Coated Sprinklers: Belleville Spring-Exposed <br /> For ENT Coated Sprinklers: Belleville Spring-Exposed, Screw and Pipcap- ENT plated <br /> Ordering Information: (Also refer to the current Viking price list.) <br /> Order Viking Microfast®Quick Response Upright Sprinkler VK300 by first adding the appropriate suffix for the sprinkler finish and <br /> then the appropriate suffix for the temperature rating to the sprinkler base part number. <br /> Finish Suffix: Brass =A, Chrome = F, White Polyester= M-/W, Black Polyester= M-/B, and ENT= JN <br /> Temperature Suffix(°F/°C): 135°/57° =A, 155°/68° = B, 175°/79° = D, 200°/93° = E, and 286'/141' = G <br /> For example, sprinkler VK300 with a 1/2" NPT thread, Brass finish and a 155 °F/68 °C temperature rating = Part No. 12978AB <br /> Available Finishes And Temperature Ratings: Refer to Table 1. <br /> Accessories: (Also refer to the"Sprinkler Accessories"section of the Viking data book.) <br /> Sprinkler Wrench: Standard Wrench: Part No. 10896W/B (available since 2000) <br /> Sprinkler Cabinets: <br /> A. Six-head capacity: Part No. 01724A(available since 1971) <br /> B. Twelve-head capacity: Part No. 01725A(available since 1971) <br /> 4. INSTALLATION <br /> Refer to appropriate NFPA Installation Standards. <br /> Form No. F_052114 Rev 14.1 (New Page) <br />