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 Standard Response Fusible Link Pendent Sprinkler VK206 is a small thermosensitive
solder link spray sprinkler available with various finishes and temperature ratings to meet
design requirements. The special Polyester and Electroless Nickel PTFE (ENT) coatings can
be used in decorative applications where colors are desired. In addition, these coatings have
been investigated for installation in corrosive environments and are Listed and Approved as
indicated in the approval chart(s).
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
FM Approved: Classes 2001 and 2005
Refer to the Approval Chart(s) and Design Criteria for Listing and/or Approval requirements
that must be followed.
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)
Thread size: 1/2" NPT, 15 mm BSPT, 3/4" NPT, 20 mm BSPT
Nominal K-Factor: 8.0 U.S. (115.2 metric**)
Overall Length: 2-1/4" (58 mm)
** Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Copper UNS-C19500
Fusible Link Assembly: Brass UNS-C51000
NOTE: For chrome sprinklers, the fusible link assembly is painted silver for decorative purposes only.
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Screw: Stainless Steel UNS-S30300
Seat: Copper UNS-C11000 or Stainless Steel UNS-S30400
For Polyester Coated Sprinklers: Belleville Spring-Exposed
For ENT Coated Sprinklers: Belleville Spring-Exposed, Screw and Pip Cap-ENT Coated
Ordering Information: (Also refer to the current Viking price list.)
Viking Standard Response Fusible Link Pendent Sprinkler VK206 by first adding the appropriate suffix for the sprinkler finish and
then the appropriate suffix for the temperature rating to the sprinkler base part number.
Finish Suffix: Brass = A, Chrome = F, White Polyester = M-/W, Black Polyester = M-/B, Wax Coated = C, and ENT = JN
Temperature Suffix: 165 °F (74 °C) = C, 220 °F (104 °C) = F, 286 °F (141 °C) = G
For example, sprinkler VK206 with a 3/4" thread, Brass finish and a 165 °F (74 °C) temperature rating = Part No. 18254AC
Available Finishes And Temperature Ratings: Refer to Table 1.
Accessories: (Also refer to the Viking website.)
Sprinkler Wrenches:
A. Standard Wrench: Part No. 21475M/B (available since 2017).
B. Standard Wrench for Wax Coated Sprinklers: Part No. 10896W/B (available since 2000)
C. Socket Wrench for Wax Coated Sprinklers: Part No. 13577W/B* (available since 2006)
*A ½" ratchet is required (not available from Viking).
Sprinkler Cabinets:
A. Six-head capacity: Part No. 01724A (available since 1971)
B. Twelve-head capacity: Part No. 01725A (available since 1971)
Form No. F_060514
20.05.26
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
†
Rev 20.1
STANDARD RESPONSE
FUSIBLE LINK PENDENT
SPRINKLER VK206 (K8.0)
Replaces Form No. F_060514 Rev 19.3
(Removed Black PTFE.)
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