Viking FREEDOM VK460 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 Freedom Residential Horizontal Sidewall Sprinkler VK460 is a small, ther-
®
mosensitive, 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 corrosion resistant as indicated in the
Approval Chart. The orifice design, with a K-Factor of 5.8 (83.6 metric
ficient 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
VdS Approved
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 2007.
Minimum Operating Pressure: 7 psi (0.5 bar).
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: 5.8 U.S. (83.6 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: 2-1/2" (63.5 mm)
Covered by the following US Patent Nos.: 7,854,269 and 7,712,218
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Brass UNS-C23000 or Phosphor Bronze UNS-C51000
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Compression Screws: 18-8 Stainless Steel
Yoke: Phosphor Bronze UNS-C51000
Available Finishes and Temperature Ratings:
Finish Brass
Suffix
Temperature 155 °F (68 °C)
Suffix
Ordering Information: See Table 1.
4. INSTALLATION
Refer to appropriate NFPA Installation Standards.
5. OPERATION
During fire conditions, the heat-sensitive liquid in the glass bulb expands, causing the glass to shatter, releasing the yoke, pip cap,
and sealing spring assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray
pattern to extinguish or control the fire.
6. INSPECTIONS, TESTS AND MAINTENANCE
Refer to NFPA 25 for Inspection, Testing and Maintenance requirements.
Form No. F_110205 Rev 01
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
)
†
Chrome White Polyester Black Polyester
A F
175 °F (79 °C)
B D
November 2022
TECHNICAL DATA
), allows ef-
†
M-/W M-/B
-- --
-- --
FREEDOM RESIDENTIAL
®
HORIZONTAL SIDEWALL
SPRINKLER VK460 (K5.8)
ENT
JN
--
--
Replaces Form No. F_110205 Rev 19.1
(Updated approvals.)
Page 1 of 6