Viking VK572 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 Standard/Quick Response Extended Coverage Ordinary Hazard (ECOH)
Pendent Sprinkler VK572 is a thermosensitive glass bulb spray sprinkler with a
14.0 (202 metric ) nominal K-Factor. The sprinkler produces the flows required to
*
meet Ordinary Hazard density requirements at lower pressures than 8.0 or 11.2
(115.2 or 161.4 metric*) K-Factor sprinklers. The glass bulb operating element and
special deflector characteristics meet the challenges of quick response extended
coverage standards. Viking EC/QREC Ordinary Hazard Sprinklers are available in
various finishes and temperature ratings to meet design requirements. The spe-
cial Polyester coatings can be used in decorative applications where colors are
desired. In addition, the ENT coating has been investigated for installation in cor-
rosive environments and is listed as indicated in the Approval Charts. The Viking
VK572 Sprinkler may be ordered and/or used as an open sprinkler (glass bulb and
pip-cap assembly removed) on deluge systems. Refer to
the next page.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
FM Approved: Class 2022
NYC Approved: MEA 89-92-E, Volume 38
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:
Available since 2004.
Minimum Operating Pressure: Refer to the Approval Charts.
Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 3/4" (20 mm) NPT
Nominal K-Factor: 14.0 U.S. (202 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: 2-7/16" (62 mm)
Material Standards:
Sprinkler Frame: Brass UNS-C84400
Deflector: Phosphor Bronze UNS-C51000
Bulb: Glass, nominal 3 mm diameter
Pip Cap: Brass UNS-C31400 or UNS-C31600
Compression Screw: Brass UNS-C36000
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
For ENT coated Sprinklers: Belleville Spring - Exposed, Screw and Pipcap - ENT plated.
For Polyester Coated Sprinklers: Belleville Spring-Exposed
Ordering Information: (Also refer to the current Viking price list.)
Order EC/QREC Ordinary Hazard Pendent Sprinkler VK572 by first adding 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, Chrome = F, White Polyester = M-/W, Black Polyester = M-/B, and ENT = JN
Temperature Suffix (°F/°C): 155°/68° = B, 175°/79° = D, 200°/93° = E, and 286°/141° = G, OPEN = Z (PTFE only).
For example, sprinkler VK572 with a Brass finish and a 155 °F/68 °C temperature rating = Part No. 13722AB.
Available Finishes And Temperature Ratings: Refer to Table 1.
Form No. F_072313 19.02.21
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
)
*
Rev 19.1
Ordering Instructions on
Replaces Form No. F_072313 Rev 18.3.P65
EC/QREC ORDINARY
HAZARD PENDENT
SPRINKLER VK572 (K14.0)
NOTE: As of May 2018 all logos have been removed from
the wrench boss.
(Removed F-1 Escutcheon.)
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