Viking VK204 Technical Data Manual

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 Upright Sprinkler VK204 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 as indicated in Approval
Chart 1.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
FM Approved: Class 2001
CE: Standard EN12259-1, DOP_VK204_18-11-19
Refer to Approval Chart(s) and Design Criterion for Listing and Approval require-
ments 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, and 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
Deflector: Copper UNS-C23000
Fusible Link Assembly: 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-S31600 and 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 Upright Sprinkler VK204 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 VK204 with a 3/4" thread, Brass finish and a 165 °F (74 °C) temperature rating = Part No. 18253AC
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)
Sprinkler Cabinets:
A. Six-head capacity: Part No. 01724A (available since 1971)
Form No. F_060414 21.09.29
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
†
Rev 21.1
STANDARD RESPONSE
FUSIBLE LINK UPRIGHT
SPRINKLER VK204 (K8.0)
Replaces Form No. F_060414 Rev 20.1
(Removed Cap render in Figure 1.)
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