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 Pendent Sprinkler VK468 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 C-UL-US-EU Listed as corro-
sion resistant as indicated in the Approval Chart. The orifice design, with a K-Factor of 4.9
(70.6 metric
), allows efficient use of available water supplies for the hydraulically designed
†
fire-protection system. The glass bulb operating element and special deflector characteris-
tics meet the challenges of residential sprinkler standards.
2. LISTINGS AND APPROVALS
UL Listed (C-UL-US-EU): Category VKKW
VdS Approved
NYC Approved: MEA 89-92-E, Volume 35
UL Classified to: NSF/ANSI Standard 61, Drinking Water System Components (MH48034).
Refer to the Approval Chart and Design Criteria for C-UL-US-EU Listing requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 2006.
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: 4.9 U.S. (70.6 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: 2-1/4" (58 mm)
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Brass UNS-C23000, Phosphor Bronze UNS-C51000, or Brass UNS-C26000
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Polytetrafluoroethylene (PTFE) Tape
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Compression Screw: 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. 13637
Order Sprinkler VK468 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 VK468 with a Brass finish and a 155 °F (68 °C) temperature rating = Part No. 13637AB.
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. Wrench for recessed sprinklers: Part No. 13577W/B
C. Optional Protective Sprinkler Cap Remover/Escutcheon Installer Tool** Part No. 15915 (available since 2010.)
*A ½" ratchet is required (not available from Viking).
**Allows use from the floor by attaching a length of 1" diameter CPVC tubing to the tool. Ideal for sprinkler cabinets. Refer to Bulletin F_051808.
Form No. F_012706
Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
)
†
November 2022
(available since 2006)
*
FREEDOM
RESIDENTIAL
®
PENDENT SPRINKLER
VK468 (K4.9)
Replaces Form No. F_012706 Rev 19.1
(Updated Approvals.)
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