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FREEDOM® RESIDENTIAL
TECHNICAL DATA PENDENT SPRINKLER
VK430 (K4.3)
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
1. DESCRIPTION
Viking Freedom'Residential Pendent Sprinkler VK430 is a thermosensitive, glass-bulb
residential sprinkler available in several different finishes and temperature ratings to -T
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 hydrau- i3
lically 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 —
llt UL Listed (C-UL-US-EU): Category VKKW
eu NYC Approved: MEA 89-92-E, Volume 24
Refer to the Approval Chart on and Design Criteria for C-UL-US-EU Listing requirements 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) Viking Technical Data may be found on
Material Standards: The Viking Corporation's Web site at
Frame Casting: Brass UNS-C84400 or QM Brass hteb Site may include aimore recent.
Deflector: Brass UNS-C26000 The Web site may include more
Bulb: Glass, nominal 3 mm diameter edition of this Technical Data Page.
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 PIDGap- ENT plated.
Ordering Information: (Also refer to the current Viking price list.)
Sprinkler: Base Part No. 09530
Order Sprinkler VK430 by first adding the appropriate suffix for the sprinkler finish and then the appropriate suffix for the tempe
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 VK430 with a Brass finish and a 155 °F (68 °C)temperature rating = Part No. 09530AB.
Available Finishes And Temperature Ratings:
Refer to Table 1.
Accessories: (Also refer to the "Sprinkler Accessories"section of the Viking data book.)
Sprinkler Wrenches:
A. Standard Wrench: Part No. 10896W/B (available since 2000)
B. Wrench for Recessed Pendent Sprinklers: Part No. 13655W/B**(available since 2006)
'*A'/;"ratchet is required(not available from Viking).
Form No. F_082095 Rev 15.1 Replaces Form No. F_0082095 Rev 14.1
(Replaced wrench 16036W/B with 13655W/B)
Page 2 of 6
NilluNG® FREEDOM° RESIDENTIAL
TECHNICAL DATA PENDENT SPRINKLER
VK430 (K4.3)
The Viking Corporation, 210 N Industrial Park Drive, Hastings Ml 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
Sprinkler Cabinets:
A. Six-head capacity: Part No. 01724A(available since 1971) I
B. Twelve-head capacity: Part No. 01725A(available since 1971)
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.
7. AVAILABILITY
The Viking Model VK430 Sprinkler is available through a network of domestic and international distributors. See The Viking
Corporation web site for the closest distributor or contact The Viking Corporation.
8. GUARANTEE
For details of warranty, refer to Viking's current list price schedule or contact Viking directly.
TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES
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Ordinary 155 °F (68 °C) 100 °F(38 °C) Red
Intermediate 175 °F (79 °C) 150 °F (65 °C) Yellow
Sprinkler Finishes: Brass, Chrome, White Polyester, Black Polyester, and ENT
Corrosion Resistant Coatings3: ENT
Footnotes
1 The sprinkler temperature rating is stamped on the deflector.
2 Based on NFPA-13.Other limits may apply,depending on fire loading,sprinkler location,and other requirements of the Authority Having Jurisdiction.
Refer to specific installation standards.
The corrosion resistant coatings have passed the standard corrosion test required by the approving agencies indicated in the Approval Chart.These
tests cannot and do not represent all possible corrosive environments.Prior to installation,verify through the end-user that the coatings are compat-
ible with or suitable for the proposed environment.For ENT coated sprinklers,the waterway is coated. Note that the spring is exposed on sprinklers
with ENT coating.
Form No. F_082095 Rev 15.1