Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
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1. DESCRIPTION
Viking Freedom
Residential Horizontal Sidewall Sprinkler VK484 is a small,
®
thermosensitive, glass-bulb residential sprinkler available in several different
finishes and temperature ratings to meet varying design requirements. The
Electroless Nickel PTFE (ENT) coating has been investigated for installation in
corrosive atmospheres and is cULus Listed as corrosion resistant as indicated
in the Approval Chart. The sprinkler orifice design, with a K-factor of 4.2,
allows efficient use of available water supplies for the hydraulically designed
fire-protection system. The glass bulb operating element and special deflector
characteristics meet the challenges of residential sprinkler standards.
2. LISTINGS AND APPROVALS
UL Listed (C-UL-US-EU) Category VKKW
Refer to the Approval Chart and Design Criteria for cULus Listing requirements
that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 2011.
Minimum Operating Pressure: Refer to the Approval Chart.
Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 1/2" (15 mm) NPT
Nominal K-Factor: 4.2 U.S. (57 metric
† Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 3" (76 mm)
Material Standards:
Frame Casting: QM Brass
Deflector: Brass UNS-C23000
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Polytetrafluoroethylene (PTFE)
Compression Screw: Brass UNS-C36000
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Pip Cap Attachment: Brass UNS-C36000
For ENT coated sprinklers: Belleville spring - Exposed, Screw and Pipcap - ENT plated.
Ordering Information: (Also refer to the current Viking price list.)
Sprinkler: Base Part No. 16240
Order Sprinkler VK484 by first adding the appropriate suffix for the sprinkler finish and then the appropriate suffix for the tempera-
ture rating to the sprinkler base part number.
Finish Suffix: Brass = A, Chrome = F, White Polyester = M-W, Black Polyester = M-B, and ENT = JN
Temperature Suffix: 155 °F (68 °C) = B, 175 °F (79 °C) = D
For example, sprinkler VK484 with a Brass finish and a 155 °F (68 °C) temperature rating = Part No. 16240AB.
Available Finishes And Temperature Ratings:
Refer to Table 1.
Accessories: (Also refer to the Viking website.)
Sprinkler Wrenches:
A. Standard Wrench: Part No. 21475MB (available since 2017)
B. Wrench for recessed sprinklers: Part No. 13655WB
††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_050310
Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
)
†
November 2022
(available since 2006)
††
FREEDOM
RESIDENTIAL
®
HORIZONTAL SIDEWALL
SPRINKLER VK484 (K4.2)
Replaces Form No. F_050310 Rev 22.1
(Updated Approvals.)
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