STANDARD/QUICK RESPONSE
EXTENDED COVERAGE
UPRIGHT SPRINKLER
VK532 (K11.2)
TECHNICAL DATA
Page 1 of 6
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
Form No. F_053114 19.10.14 Rev 19.1
1. DESCRIPTION
Viking EC/QREC Upright Sprinkler VK532 is a thermosensitive spray sprinkler available in
several different finishes and temperature ratings to meet varying design requirements. The
extra-large orifice produces the flows required to meet Light and Ordinary Hazard density re-
quirements at lower pressures than standard orifice or large orifice sprinklers. The glass bulb
operating element and special deflector characteristics meet the challenges of quick response
extended coverage standards. Upright Sprinkler VK532 is cULus Listed as standard and quick
response and FM Approved as quick response. The special Polyester and Electroless Nickel
PTFE (ENT)
coatings can be used in decorative applications where colors are desired. In
addition, ENT coating has been investigated for installation in corrosive atmospheres. See
Approval Charts.
2. LISTINGS AND APPROVALS
cULus Listed:
Category VNIV
FM Approved:
Class 2022
Refer to Approval Chart 1 and Design Criteria for cULus Listing requirements, and refer to Approval Chart 2 and Design
Criteria for FM Approval requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: Refer to the Approval Charts.
Maximum Working Pressure: 175 psi (12 Bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 3/4” (20 mm) NPT
Nominal K-Factor: 11.2 U.S. (161.3 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: 2-5/16 (59 mm)
Material Standards:
Sprinkler Frame: Brass UNS-C84400
Deflector: Copper UNS-C19500
Bulb: Glass, nominal 3 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Teflon Tape
Screw: Brass UNS-C36000
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
For Polyester Coated Sprinklers:
Belleville Spring-Exposed
For ENT Coated Sprinkler: Belleville Spring-Exposed, Screw and Pipcap-ENT plated.
Ordering Information:
(Also refer to the current Viking price list.)
Order Viking EC/QREC Upright Sprinkler VK532 by first adding the appropriate suffix for the sprinkler finish and then the appro-
priate suffix for the temperature 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: 135 °F (57 °C) = A, 155 °F (68 °C) = B, 175 °F (79 °C) = D, 200 °F (93 °C) = E, and 286 °F (141 °C) = G
For example, sprinkler VK532 with a Brass finish and a 155 °F (68 °C) temperature rating = Part No. 08687AB
Available Finishes And Temperature Ratings:
Refer to Table 1.
Accessories:
(Also refer to the Viking website)
Sprinkler Wrenches:
A. Standard Wrench: Part No. 05118CW/B (available since 1981)
B. Wrench for recessed pendent sprinkler: Part No. 11663W/B
**
(available since 2001)
**A ½” ratchet is required (not available from Viking).
Sprinkler Cabinets:
A. Six-head capacity: Part No. 01724A (available since 1971)
B. Twelve-head capacity: Part No. 01725A (available since 1971)
Replaces Form No. F_053114 Rev 18.2.P65
(Added ENT; updated FM language.)
NOTE: As of May 2018 all logos have been re
-
moved from the wrench boss.
