MODEL V-SD
SPECIFIC APPLICATION
ATTIC SPRINKLER
TECHNICAL DATA
Page 1 of 12
Form No. F_043015 20.07.28 Rev 20.2
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: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.
1. DESCRIPTION
The Model V-SD (Single Directional) Specific Application Attic Sprinkler is designed to
provide superior fire protection in combustible and non-combustible sloped attic spaces
when compared to standard spray attic protection. With specific application criteria for use
with Model V-BB (Back to Back) and VK696 Attic Upright Specific Application Sprinklers,
Viking attic sprinklers provide an extended coverage spacing alternative to standard spray
sprinklers. They make it possible to use a single line of piping at the attic peak, eliminating the
need for branch lines and greatly reducing the number of required sprinklers and associated
material and installation costs. Model V-SD models also have lower minimum flow and
pressure requirements than competitive products.
Viking Attic Sprinklers can be installed with either steel or CPVC piping (CPVC allowed on wet
pipe systems only), and are available in brass or with corrosion-resistant Electroless Nickel
PTFE (ENT) coatings where salt water and other corrosive elements are a consideration.
They are cULus Listed with specific application guidelines for use as special sprinklers
as defined by the National Fire Protection Association (NFPA), and are cULus Listed for
extended coverage in combustible and non-combustible construction. The cULus Listing was
achieved using full-scale fire tests within wood truss construction.
The Model V-SD (Single Directional) sprinkler provides a reduced response time due to its
narrow ridge spacing of 6 ft. (1,8 m) and long throw pattern (up to 40 ft. in a single direction
measured horizontally) and is offered in three different slope ranges and one orifice size
(K=5.6). Listed for specific pitches 4:12<7:12, 7:12<10:12 and 10:12≤12:12, and spans
40 ft. and 30 ft.
2. LISTINGS AND APPROVALS
cULus Listed:
Category VNIV
Refer to the Approval Chart on page 3.
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: See Design Criteria - UL on page 4.
Rated to 175 psi (12 bar) water working pressure
Factory tested hydrostatically to 500 psi (34.5 bar)
Thread size: 1/2” (15 mm) NPT
Nominal K-Factor: 5.6 U.S. (80.6 metric*)
* Metric K-factor measurement shown is 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: 2-3/4” (69 mm)
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Brass UNS-C51000
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Teflon Tape
Screw: 18-8 Stainless Steel
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Yoke: Phosphor Bronze - UNS-C51000
Deflector Screw: 316 Stainless Steel
Ordering Information:
(Also refer to the current Viking price list.)
To order the Attic Sprinkler, add the appropriate suffix for the sprinkler finish and then the appropriate suffix for the temperature
rating to the sprinkler base part number.
Finish Suffix: Brass = A, ENT = JN
Temperature Suffix: E = 200 °F (93.3 °C)
V-SD SPRINKLER
(Single directional)
V-SD Sprinkler
5.6K
Pitch
VK693
4:12 < 7:12
VK694
7:12 < 10:12
VK695
10:12
≤
12:12
Replaces Form F_043015 Rev. 20.1
(added antifreeze system design criteria.)
