Viking VK2843 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 Quick Response Ordinary Hazard Dry Horizontal Sidewall Sprinklers are
thermosensitive spray sprinklers suitable for use in areas subject to freezing.
The sprinklers are designed for dry systems and preaction systems where it is
necessary to prevent water or condensation from entering the drop nipple before
sprinkler operation. They may also be installed in spaces subject to freezing
and supplied from a wet system in an adjacent heated area. The large orifice
dry sidewall sprinkler allows greater flows at lower pressures than standard
orifice sprinklers. The newly desinged deflector carries an expanded approval for
installation from 4" to 12" below the ceiling.
Viking Quick Response Ordinary Hazard Dry Horizontal Sidewall Sprinklers
are available in various finishes and temperature ratings to meet design
requirements. The special Polyester coating has been investigated for installation
in corrosive atmospheres and is cULus listed as corrosion resistant as indicated
in the Approval Chart.
NOTE: When installed in some corrosive environments, the Polyester finish
may change color. This natural discoloration over time is not in itself an
indication of corrosion and should not be treated as such. All sprinklers
installed in corrosive environments should be replaced or tested as
described in NFPA 25 on a more frequent basis.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
NYC Approved: MEA 89-92-E, Volume 37
Refer to the Approval Chart on page 3 and Design Criteria on page 4 for cULus Listing requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 2005.
Minimum Operating Pressure: 7 PSI (0.5 bar)
Maximum Working Pressure: 175 PSI (12 bar).
Factory tested hydrostatically to 500 psi (34.5 bar)
Thread size: 1" NPT or 25 mm BSP
Nominal K-Factor: 8.0 U.S. (115.2 metric*) for lengths up to 48".
* 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.
Covered by U.S. Patent numbers: 8,636,075 and 8,376,060
Material Standards:
Frame Casting: Brass UNS-C84400
Deflector: Phosphor Bronze UNS-C51000
Fusible Element Assembly: Nickel Alloy
Trigger and Support: Stainless Steel UNS-S31600
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Compression Screw: Brass UNS-C36000
Seat and Adapter Assembly: Brass UNS-C36000
Orifice: Copper UNS-C11000 or UNS-C21000
Tube: ERW Hydraulic Steel Tube
Inlet and Barrel End: QM Brass or Brass UNS-C31400 or Brass UNS-C31600
Support (Internal): Brass UNS-C36000 or Brass UNS-C31400 or Brass UNS-C31600
Barrel: Steel Pipe UNS-G10260, Electrodeposited Epoxy Base finish
Sleeve (for Adjustable Standard style only): Brass UNS-C26000 or UNS-C26800
Form No. F_022717 18.11.01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Rev 18.1.P65
Page 1 of 8
QUICK RESPONSE
ORDINARY HAZARD DRY
HSW FUSIBLE LINK
SPRINKLERS (8.0K)
(VK2843, VK2883, & VK2923)
Replaces Form No. F_022717 Rev 18.1
(Added P65 Warning.)