Viking FREEDOM VK430 Technical Data Manual

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 VK430 is a 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 corrosion resistant as indicated in the Approval Chart. The orifice design, with a
K-Factor of 4.3 (62 metric*), allows efficient use of available water supplies for the
hydraulically designed fire-protection system. The fast response type glass bulb and
special deflector combine speed of operation and area of coverage to meet residential
sprinkler standards while being aesthetically pleasing.
2. LISTINGS AND APPROVALS
UL Listed (C-UL-US-EU): Category VKKW
NYC Approved: MEA 89-92-E, Volume 24
Refer to the Approval Chart on and Design Criteria for C-UL-US-EU Listing require-
ments that must be followed.
3. TECHNICAL DATA
Specifications:
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: 4.3 U.S. (62 metric*)
* Metric K-factor measurement shown is for when pressure is measured 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-C26000
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Teflon Tape
Compression Screw: Brass UNS-C36000
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Pip Cap Attachment (for QM Brass sprinklers only): Brass UNS-C36000
For ENT coated sprinklers: Belleville spring - Exposed, Screw and Pipcap - ENT plated.
Available Finishes and Temperature Ratings:
Finish Brass
Suffix
Temperature 155 °F (68 °C)
Suffix
Ordering Information: (Refer to 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 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_082095 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
M-/W M-/B
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FREEDOM RESIDENTIAL
®
PENDENT SPRINKLER
VK430 (K4.3)
ENT
JN
--
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Replaces Form No. F_082095 Rev 18.2.P65
(Updated Approvals.)
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