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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
The Viking Microfast
®
thermosensitive, glass-bulb spray sprinkler available in several different finishes
and temperature ratings to meet design requirements. The special Polyester
coatings can be used in decorative applications where colors are desired. In
addition, these coatings have been investigated for installation in corrosive
atmospheres and are listed as corrosion resistant as indicated in the Approval
Charts.
2. LISTINGS AND APPROVALS
VdS approved: Certificate: G4930039
CE certified: Standard EN 12259-1, EC-certificate of conformity 0786-
CPD-40131
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: 7 psi (0.5 bar)*
Maximum Working Pressure: 175 psi (12 bar) wwp.
Factory tested hydrostatically to 500 psi (34.5 bar)
Testing: U.S.A. Patent No. 4,831,870
Thread size: 10 mm BSP
Nominal K-Factor: 4.2 U.S. (57 metric**)
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 2-1/4" (58 mm)
*cULus Listing, FM Approval, and NFPA 13 installs require a minimum of 7 psi (0.5 bar). The minimum operating pressure for LPCB and CE
Approvals ONLY is 5 psi (0.35 bar).
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Brass UNS-C26000
Bushing: Brass UNS-C36000
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Screw: Brass UNS-C36000
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Pip Cap Attachment: Brass UNS-C36000
For Polyester Coated Sprinklers: Belleville Spring-Exposed
Ordering Information:
Order Viking Microfast
then the appropriate suffix for the temperature rating to the sprinkler base part number.
Finish Suffix: Brass = A, Chrome = F, White Polyester = M-/W, and Black Polyester = M-/B
Temperature Suffix (°F/°C): 135°/57° = A, 155°/68° = B, 175°/79° = D, 200°/93° = E, and 286°/141° = G
For example, sprinkler VK3271 with a 1/2" NPT thread, Brass finish and a 155 °F/68 °C temperature rating = Part No. 06931BAB
Available Finishes And Temperature Ratings: Refer to Table 1.
Accessories: (Also refer to the Viking website.)
Sprinkler Wrench: Standard Wrench: Part No. 21475M/B (available since 2017)
Sprinkler Cabinets:
A. Six-head capacity: Part No. 01724A (available since 1971)
B. Twelve-head capacity: Part No. 01725A (available since 1971)
4. INSTALLATION
Refer to appropriate NFPA Installation Standards.
Form No. F_061614
18.11.05
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Quick Response Upright Sprinkler VK3271 is a small,
(Also refer to the current Viking price list.)
Quick Response Upright Sprinkler VK3271 by first adding the appropriate suffix for the sprinkler finish and
®
Rev 17.2.P65
TECHNICAL DATA
MICROFAST
QUICK
®
RESPONSE UPRIGHT
SPRINKLER VK3271 (K4.2)
Replaces Form No. F_061614 Rev 17.2
(Added P65 Warning.)
Page 1 of 3
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Related Manuals for Viking MICROFAST VK3271
Summary of Contents for Viking MICROFAST VK3271
- Page 1 SPRINKLER VK3271 (K4.2) 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 The Viking Microfast Quick Response Upright Sprinkler VK3271 is a small, ®...
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Page 2: Technical Data
Quick Response Upright Sprinkler VK3271 is available through a network of domestic and international distribu- ® tors. 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 3 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 organiza- tions, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable.
- Page 4 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 5 * 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 6 • 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 7 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 8: 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...