Viking VK290 Technical Data Manual

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
Viking Quick Response Lage Orifice Dry Pendent Fusible Link 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.
Viking Quick Response Dry Pendent Sprinklers are available in various finishes
and temperature ratings to meet design requirements. The large orifice dry pendent
sprinkler allows greater flows at lower pressures than standard orifice sprinklers.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
NYC Approved: MEA 89-92-E, Volume 37
Refer to the Approval Chart and Design Criteria
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 BSPT
Nominal K-Factor: 8.0 U.S. (115.2 metric*) for lengths up to 48".
Covered by the following U.S. Patents: 8,636,075 and 10,220,231
* 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.
Material Standards:
Frame Casting: Brass UNS-C84400
Deflector: Brass UNS-C23000
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
Escutcheon Materials:
Adjustable Standard Dry Escutcheons: Brass UNS-C26000 or UNS-C26800
Recessed Dry Escutcheons: Cold Rolled Steel UNS-G10080
Ordering Information: (Also refer to the current Viking price list.)
Order Quick Response Dry Pendent Sprinklers by first adding the appropriate suffix for the sprinkler finish, the appropriate suffix for
the temperature rating, and then the suffix for the length ("A" dimension) to sprinkler base part number. Order in a specific length
noted as the "A" dimension (see Figures 3 through 5). The "A" dimension is the distance from the face of the fitting (tee) to the
desired finished surface of the ceiling.
These sprinklers are listed and approved in lengths from 1-1/2" to 45-1/2" (38.1 mm to 1,156 mm) for the adjustable standard
style, 3" to 47" (76.2 mm to 1,194 mm) for the plain barrel style, and 3-1/4" to 47-1/2" (82.5 mm to 1,207 mm) for the adjustable
recessed style.
Form No. F_010505 Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
April 2023
QUICK RESPONSE LARGE
ORIFICE DRY PENDENT
FUSIBLE LINK SPRINKLERS
(VK290, VK286, VK282)
Replaces Form No. F_010505 Rev 20.1
(Adding venting statement(s))
Page 1 of 6