Viking VK540 Technical Data Manual

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
Visit the Viking website for the latest edition of this technical data page: www.vikinggroupinc.com
1. DESCRIPTION
The Viking Standard Response High Challenge
is a thermosensitive, glass-bulb sprinkler intended for use in protecting high piled
storage occupancies in accordance with NFPA 13 rules for CMSA Sprinklers and
FM Global criteria for non-storage and storage sprinklers.
The sprinkler produces large water droplets through the use of an extra-large orifice
and a special double deflector. The large water droplets provide the required mass
to penetrate the fire plume of severe fires. This characteristic permits direct wetting
of the burning fuel while cooling the atmosphere and can eliminate the requirement
for in-rack sprinklers in certain cases.
Viking VK540 Upright CMSA Sprinklers are primarily intended to protect the following
types of storage, which tend to produce severe-challenge fires: palletized and solid
pile storage and single, double, multiple row, and portable open rack storage (no
open-top containers or solid shelves).
Viking High Challenge
®
common storage materials, including:
• Class I, II, III, and IV commodities*
• Cartoned or exposed unexpanded plastics*
• Cartoned or exposed expanded plastics*
* Refer the Approval Charts and Design Criteria for cULus Listing and FM Approval requirements
that must be followed.
In addition, some storage arrangements of idle wood pallets, rolled paper, aerosols,
and rubber tires may be protected by Viking Upright CMSA Sprinkler VK540.
NOTE: Also known as the Large-Drop Sprinkler in the 2007 and prior editions of
NFPA 13.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
FM Approved: Class 2007
NYC Approved: MEA 89-92-E, Volume 19
NOTE: Other International approval certificates are available upon request.
Refer to the Approval Charts and Design Criteria on this data page for Listing and
Approval requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 1996.
Minimum Operating Pressure: Refer to NFPA 13 or FM Global loss prevention data sheets.
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*** or 3/4" (20 mm) NPT
Nominal K-Factor: 11.2 U.S. (161.3 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.
*** For retrofit only.
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 3-5/16" (84 mm)
Deflector Diameter: 3-5/8" (92 mm)
Deflector: U.S.A. Patent No. 1,118,710
Material Standards:
Frame Casting: Brass UNS-C84400
Screw: Brass UNS-C36000
Pip Cap: Copper UNS-C11000 and UNS-S30400
Form No. F_090595 18.10.25 Rev 16.1.P65
TECHNICAL DATA
Upright CMSA Sprinkler VK540
®
Upright CMSA Sprinkler VK540 provides protection of most
STANDARD RESPONSE HIGH
CHALLENGE
®
SPRINKLER (CONTROL MODE
SPECIFIC APPLICATION)
Replaces Replaces Form No. 090595 Rev 16.1
(Added P65 Warning.)
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