STANDARD RESPONSE
ELO UPRIGHT SPRINKLER
VK530
(STORAGE-DENSITY/AREA)
TECHNICAL DATA
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.
Form No. F_010692 21.09.16 Rev 21.1
Page 1 of 5
1. DESCRIPTION
The Viking Standard Response ELO Upright Sprinkler VK530 is a thermosensitive
glass bulb spray sprinkler available in several different finishes and temperature
ratings to meet design requirements. The special Polyester, PTFE, and Electroless
Nickel PTFE (ENT) coatings can be used in decorative applications where colors
are desired. In addition, these coatings have been investigated for installation
in corrosive environments and are listed/approved as indicated in the Approval
Charts.
The extra-large orifice provides greater flows at lower pressures than standard
orifice or large orifice sprinklers. This feature allows reduced pipe sizing for
hydraulically calculated sprinkler systems, which require high densities of water.
On existing systems, replacing large orifice sprinklers with extra-large orifice
sprinklers may provide the higher densities required to allow an increase in the
hazard classification of an occupancy.
Viking standard response sprinklers may be ordered and/or used as open sprin-
klers (glass bulb and pip cap assembly removed) on deluge systems. Refer to
Ordering Instructions
below.
2. LISTINGS AND APPROVALS
cULus Listed:
Category VNIV
FM Approved:
Class 2009
Refer to Approval Chart 1 and Design Criteria on page 3 for cULus Listing requir-
ments, and refer to Approval Chart 2 and Design Criteria on page 4 for FM Approval requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 1992.
Maximum Working Pressure: 175 psi (12 bar).
Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 3/4” NPT or 20 mm BSP
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.
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 2-5/16” (58.7 mm)
Material Standards:
Sprinkler Frame: Brass UNS-C84400
Deflector: Brass UNS-C51000
Bulb: Glass, nominal 5 mm diameter
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
Compression Screw: Brass UNS-C36000
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
For PTFE Coated Sprinklers:
Belleville Spring-Exposed, Screw-Nickel Plated, Pip Cap-PTFE Coated
For Polyester Coated Sprinklers:
Belleville Spring-Exposed
For ENT Coated Sprinklers: Belleville Spring-Exposed, Screw and Pipcap-ENT plated
Replaces Form No. F_010692 Rev 19.1
(Updated Deflector Material)
NOTE: As of May 2018 all logos have been removed from the
wrench boss.
